David Lawrence Print


  240-228-9615

  David.J.Lawrence@jhuapl.edu

: SES

:   Physicist; Planetary Scientist

:  Planetary, Heliophysics

  Dawn, GRaND, Lunar Prospector, GRS, NS, APS, Mars Odyssey, GRS, MESSENGER, GRNS, SMART-1

 
Degree Field of Study Year Attained Institution Name
Ph. D. Physics 1996 Washington University in St. Louis
M. A. Physics 1992 Washington University in St. Louis
B. S. Physics and Mathematics 1990 Texas Christian University

I carry out a wide variety of research in planetary and space physics ranging from studies of planetary compositions, solar and magnetophysics, and the development of instrumentation and analysis techniques needed to carry out these studies.  Areas of specific expertise, capabilities, and projects are given below.

  • Research work in lunar and planetary science using techniques of orbital nuclear spectroscopy:  I have carried out and continue to conduct lunar science studies using global composition maps from Lunar Prospector (LP) gamma-ray and neutron data, lunar polar hydrogen abundances using LP neutron data, and lunar gas release events using LP alpha particle data.  I am currently working on studies of Mercury's surface composition using data from the MESSENGER Gamma-Ray and Neutron Spectrometer.  I am conducting and participating in studies of the asteroids Vesta and Ceres using data from Dawn's Gamma-Ray and Neutron Detector (GRaND). I have participated in studies of surface composition for Mars and the asteroid Eros using nuclear spectroscopy data.
  • Research work on instrument development for future planetary surface instrumentation:  I have carried out instrument design, development, and experimental testing studies for planetary surface gamma-ray and neutron detectors. Specific projects have included instrument developments and experiments to validate planetary rover neutron spectrometers, build miniature nuclear spectrometers for planetary surface-based applications, and develop a miniature high-purity germanium gamma-ray detector for planetary science applications.
  • Research work in magnetospheric and solar physics:  I have carried out magnetospheric science studies using data from the Los Alamos designed Magnetospheric Plasma Analyzer experiment during my postdoc tenure, and I am currently conducting solar and magnetospheric physics studies using data from the MESSENGER Neutron Spectrometer as well as applicable data from other MESSENGER instruments and spacecraft.
 
AGU Index Category AGU Index Sub-Category
PLANETARY SCIENCES: SOLID SURFACE PLANETS Composition
PLANETARY SCIENCES: SOLID SURFACE PLANETS Interactions with particles and fields
PLANETARY SCIENCES: SOLID SURFACE PLANETS Magnetospheres
PLANETARY SCIENCES: SOLID SURFACE PLANETS Instruments and techniques
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Moon
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Mercury
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Mars
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Asteroids
SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Energetic particles
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Instruments and techniques
:
Start Year End Year Description
1996 1999 Post-doctoral Research Associate, Los Alamos National Laboratory
1999 2008 Technical Staff Member, Group ISR-1, Los Alamos National Laboratory
2005 2005 Visiting Scientist, Rutherford Appleton Laboratory, United Kingdom
2006 2007 Director of Center for Space Science and Exploration, Los Alamos National Laboratory
2005 2008 Section Leader of Gamma-Ray/Neutron Section of International, Space, and Response Group, Los Alamos National Laboratory
2010 2014 Section Supervisor of Moon/Exploration Section in Planetary Exploration Group, Space Department, JHU/APL
2008 Current Principal Professional Staff, Space Exploration Sector, JHU/APL
Start Year End Year Description
2006 2007 Member of the National Research Council Committee on Lunar Science Priorities and Goals
1996 Current Member American Geophysical Union
Year Description
2008 JHU/APL Janney Publications Fellowship
2009, 2014 JHU/APL Outstanding Publication Awards
1999, 1999, 2008, 2013 NASA Group Achievement Awards for Lunar Prospector, Deep Space 1, MESSENGER and Dawn
1998, 2002, 2004 Los Alamos National Laboratory Distinguished Performance Awards
1998 Los Alamos National Laboratory Achievement Award
1994 - 1996 NASA Graduate Student Researchers Fellowship
:
The following publication information was downloaded from http://www.researcherId.com/rid/E-7463-2015.
Evans, Larry G., Peplowski, Patrick N., McCubbin, Francis M., McCoy, Timothy J., Nittler, Larry R., Zolotov, Mikhail Yu., Ebel, Denton S., Lawrence, David J., Starr, Richard D., Weider, Shoshana Z., Solomon, Sean C., (2015), Chlorine on the surface of Mercury: MESSENGER gamma-ray measurements and implications for the planet's formation and evolution, Icarus, 257, 417-427

Lawrence, David J., Feldman, William C., Peplowski, Patrick N., Solomon, Sean C., (2015), The 4 June 2011 neutron event at Mercury: A defense of the solar origin hypothesis, Journal of Geophysical Research-Space Physics, 120, 5284-5289

Lawrence, David J., Miller, Richard S., Ozimek, Martin T., Peplowski, Patrick N., Scott, Christopher J., (2015), High-resolution mapping of lunar polar hydrogen with a low-resource orbital mission, Acta Astronautica, 115, 452-462

Lawrence, David J., Peplowski, Patrick N., Plescia, Jeffrey B., Greenhagen, Benjamin T., Maurice, Sylvestre, Prettyman, Thomas H., (2015), Bulk hydrogen abundances in the lunar highlands: Measurements from orbital neutron data, Icarus, 255, 127-134

Lorenz, Ralph D., Lawrence, David J., (2015), Gamma rays and cosmic rays at Venus: The Pioneer Venus gamma ray detector and considerations for future measurements, Planetary and Space Science, 109, 129-134

McCubbin, Francis M., Kaaden, Kathleen E. Vander, Tartese, Romain, Klima, Rachel L., Liu, Yang, Mortimer, James, Barnes, Jessica J., Shearer, Charles K., Treiman, Allan H., Lawrence, David J., Elardo, Stephen M., Hurley, Dana M., Boyce, Jeremy W., Anand, Mahesh, (2015), Magmatic volatiles (H, C, N, F, S, Cl) in the lunar mantle, crust, and regolith: Abundances, distributions, processes, and reservoirs, American Mineralogist, 100, 1668-1707

Peplowski, Patrick N., Bazell, David, Evans, Larry G., Goldsten, John O., Lawrence, David J., Nittler, Larry R., (2015), Hydrogen and major element concentrations on 433 Eros: Evidence for an L- or LL-chondrite-like surface composition, Meteoritics & Planetary Science, 50, 353-367

Peplowski, Patrick N., Lawrence, David J., Evans, Larry G., Klima, Rachel L., Blewett, David T., Goldsten, John O., Murchie, Scott L., McCoy, Timothy J., Nittler, Larry R., Solomon, Sean C., Starr, Richard D., Weider, Shoshana Z., (2015), Constraints on the abundance of carbon in near-surface materials on Mercury: Results from the MESSENGER Gamma-Ray Spectrometer, Planetary and Space Science, 108, 98-107

Peplowski, Patrick N., Lawrence, David J., Feldman, William C., Goldsten, John O., Bazell, David, Evans, Larry G., Head, James W., Nittler, Larry R., Solomon, Sean C., Weider, Shoshana Z., (2015), Geochemical terranes of Mercury's northern hemisphere as revealed by MESSENGER neutron measurements, Icarus, 253, 346-363

Rodgers, Douglas J., Lawrence, David J., Feldman, William C., Peplowski, Patrick N., (2015), Neutrons and energetic charged particles in the inner heliosphere: Measurements of the MESSENGER Neutron Spectrometer from 0.3 to 0.85 AU, Journal of Geophysical Research: Space Physics, 120, 841-854

Wilson, J. T., Eke, V. R., Massey, R. J., Elphic, R. C., Jolliff, B. L., Lawrence, D. J., Llewellin, E. W., McElwaine, J. N., Teodoro, L. F. A., (2015), Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich Volcanic Complex, Journal of Geophysical Research-Planets, 120, 92-108

Beck, A. W., Lawrence, D. J., Peplowski, P. N., Prettyman, T. H., McCoy, T. J., (2014), Fast Neutrons In Heds: New Insights Into Dawn Data And Neutron Spectroscopy, Meteoritics & Planetary Science, 49, A28

Cahill, Joshua T. S., Hagerty, Justin J., Lawrence, David J., Klima, Rachel L., Blewett, David T., (2014), Surveying the South Pole-Aitken basin magnetic anomaly for remnant impactor metallic iron, Icarus, 243, 27-30

Domingue, Deborah L., Chapman, Clark R., Killen, Rosemary M., Zurbuchen, Thomas H., Gilbert, Jason A., Sarantos, Menelaos, Benna, Mehdi, Slavin, James A., Schriver, David, Travnicek, Pavel M., Orlando, Thomas M., Sprague, Ann L., Blewett, David T., Gillis-Davis, Jeffrey J., Feldman, William C., Lawrence, David J., Ho, George C., Ebel, Denton S., Nittler, Larry R., Vilas, Faith, Pieters, Carle M., Solomon, Sean C., Johnson, Catherine L., Winslow, Reka M., Helbert, Joern, Peplowski, Patrick N., Weider, Shoshana Z., Mouawad, Nelly, Izenberg, Noam R., McClintock, William E., (2014), Mercury's Weather-Beaten Surface: Understanding Mercury in the Context of Lunar and Asteroidal Space Weathering Studies, Space Science Reviews, 181, 121-214

Lawrence, David J., Feldman, William C., Gold, Robert E., Goldsten, John O., McNutt, Ralph L., (2014), The neutron, gamma-ray, X-ray spectrometer (NGXS): A compact instrument for making combined measurements of neutrons, gamma-rays, and X-rays, Acta Astronautica, 93, 524-529

Lawrence, David J., Feldman, William C., Goldsten, John O., Peplowski, Patrick N., Rodgers, Douglas J., Solomon, Sean C., (2014), Detection and characterization of 0.5-8 MeV neutrons near Mercury: Evidence for a solar origin, Journal of Geophysical Research: Space Physics, 119, 5150-5171

Miller, Richard S., Lawrence, David J., Hurley, Dana M., (2014), Identification of surface hydrogen enhancements within the Moon's Shackleton crater, Icarus, 233, 229-232

Peplowski, Patrick N., Evans, Larry G., Stockstill-Cahill, Karen R., Lawrence, David J., Goldsten, John O., McCoy, Timothy J., Nittler, Larry R., Solomon, Sean C., Sprague, Ann L., Starr, Richard D., Weider, Shoshana Z., (2014), Enhanced sodium abundance in Mercury's north polar region revealed by the MESSENGER Gamma-Ray Spectrometer, Icarus, 228, 86-95

Teodoro, L. F. A., Eke, V. R., Elphic, R. C., Feldman, W. C., Lawrence, D. J., (2014), How well do we know the polar hydrogen distribution on the Moon?, Journal of Geophysical Research-Planets, 119, 574-593

Crites, S. T., Lucey, P. G., Lawrence, D. J., (2013), Proton flux and radiation dose from galactic cosmic rays in the lunar regolith and implications for organic synthesis at the poles of the Moon and Mercury, Icarus, 226, 1192-1200

Funsten, H. O., Allegrini, F., Bochsler, P. A., Fuselier, S. A., Gruntman, M., Henderson, K., Janzen, P. H., Johnson, R. E., Larsen, B. A., Lawrence, D. J., McComas, D. J., Moebius, E., Reisenfeld, D. B., Rodriguez, D., Schwadron, N. A., Wurz, P., (2013), Reflection of solar wind hydrogen from the lunar surface, Journal of Geophysical Research-Planets, 118, 292-305

Lawrence, David J., Peplowski, Patrick N., Prettyman, Thomas H., Feldman, William C., Bazell, David, Mittlefehldt, David W., Reedy, Robert C., Yamashita, Naoyuki, (2013), Constraints on Vesta's elemental composition: Fast neutron measurements by Dawn's gamma ray and neutron detector, Meteoritics & Planetary Science, 48, 2271-2288

Peplowski, Patrick N., Lawrence, David J., (2013), New insights into the global composition of the lunar surface from high-energy gamma rays measured by Lunar Prospector, Journal of Geophysical Research-Planets, 118, 671-688

Peplowski, Patrick N., Lawrence, David J., Prettyman, Thomas H., Yamashita, Naoyuki, Bazell, Dave, Feldman, William C., Le Corre, Lucille, McCoy, Timothy J., Reddy, Vishnu, Reedy, Robert C., Russell, Chris T., Toplis, Michael J., (2013), Compositional variability on the surface of 4 Vesta revealed through GRaND measurements of high-energy gamma rays, Meteoritics & Planetary Science, 48, 2252-2270

Prettyman, Thomas H., Mittlefehldt, David W., Yamashita, Naoyuki, Beck, Andrew W., Feldman, William C., Hendricks, John S., Lawrence, David J., McCoy, Timothy J., McSween, Harry Y., Peplowski, Patrick N., Reedy, Robert C., Toplis, Michael J., Le Corre, Lucille, Mizzon, Hugau, Reddy, Vishnu, Titus, Timothy N., Raymond, Carol A., Russell, Christopher T., (2013), Neutron absorption constraints on the composition of 4 Vesta, Meteoritics & Planetary Science, 48, 2211-2236

Yamashita, N., Prettyman, T. H., Mittlefehldt, D. W., Toplis, M. J., McCoy, T. J., Beck, A. W., Reedy, R. C., Feldman, W. C., Lawrence, D. J., Peplowski, P. N., Forni, O., Mizzon, H., Raymond, C. A., Russell, C. T., (2013), Distribution of iron on Vesta, Meteoritics & Planetary Science, 48, 2237-2251

Eke, V. R., Teodoro, L. F. A., Lawrence, D. J., Elphic, R. C., Feldman, W. C., (2012), A Quantitative Comparison Of Lunar Orbital Neutron Data, Astrophysical Journal, 747

Evans, Larry G., Peplowski, Patrick N., Rhodes, Edgar A., Lawrence, David J., McCoy, Timothy J., Nittler, Larry R., Solomon, Sean C., Sprague, Ann L., Stockstill-Cahill, Karen R., Starr, Richard D., Weider, Shoshana Z., Boynton, William V., Hamara, David K., Goldsten, John O., (2012), Major-element abundances on the surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer, Journal of Geophysical Research-Planets, 117

Fischbach, E., Chen, K. J., Gold, R. E., Goldsten, J. O., Lawrence, D. J., McNutt, R. J., Jr., Rhodes, E. A., Jenkins, J. H., Longuski, J., (2012), Solar influence on nuclear decay rates: constraints from the MESSENGER mission, Astrophysics and Space Science, 337, 39-45

Hurley, Dana M., Lawrence, David J., Bussey, D. Benjamin J., Vondrak, Richard R., Elphic, Richard C., Gladstone, G. Randall, (2012), Two-dimensional distribution of volatiles in the lunar regolith from space weathering simulations, Geophysical Research Letters, 39

Miller, R. S., Nerurkar, G., Lawrence, D. J., (2012), Enhanced hydrogen at the lunar poles: New insights from the detection of epithermal and fast neutron signatures, Journal of Geophysical Research-Planets, 117

Peplowski, Patrick N., Hepplewhite, Peter D., Lawrence, David J., Feldman, William C., Hibbitts, Charles A., (2012), Operation of a He-3 proportional counter in the Ganymede radiation environment, Planetary and Space Science, 61, 46-52

Peplowski, Patrick N., Lawrence, David J., Rhodes, Edgar A., Sprague, Ann L., McCoy, Timothy J., Denevi, Brett W., Evans, Larry G., Head, James W., Nittler, Larry R., Solomon, Sean C., Stockstill-Cahill, Karen R., Weider, Shoshana Z., (2012), Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer, Journal of Geophysical Research-Planets, 117

Peplowski, Patrick N., Rhodes, Edgar A., Hamara, David K., Lawrence, David J., Evans, Larry G., Nittler, Larry R., Solomon, Sean C., (2012), Aluminum abundance on the surface of Mercury: Application of a new background-reduction technique for the analysis of gamma-ray spectroscopy data, Journal of Geophysical Research-Planets, 117

Prettyman, T. H., Reedy, R. C., Mittlefehldt, D. W., Yamashita, N., Lawrence, D. J., Beck, A. W., Feldman, W. C., McCoy, T. J., McSween, H. Y., Toplis, M. J., Forni, O., Mizzon, H., Raymond, C. A., Russell, C. T., Polanskey, C. A., Joy, S. P., Mafi, J., Dawn Sci Team, (2012), FOR A FEW HOWARDITES MORE: GRAND MAPS THE ELEMENTAL COMPOSITION OF VESTA, Meteoritics & Planetary Science, 47, A322

Prettyman, Thomas H., Mittlefehldt, David W., Yamashita, Naoyuki, Lawrence, David J., Beck, Andrew W., Feldman, William C., McCoy, Timothy J., McSween, Harry Y., Toplis, Michael J., Titus, Timothy N., Tricarico, Pasquale, Reedy, Robert C., Hendricks, John S., Forni, Olivier, Le Corre, Lucille, Li, Jian-Yang, Mizzon, Hugau, Reddy, Vishnu, Raymond, Carol A., Russell, Christopher T., (2012), Elemental Mapping by Dawn Reveals Exogenic H in Vesta's Regolith, Science, 338, 242-246

Russell, C. T., Raymond, C. A., Coradini, A., McSween, H. Y., Zuber, M. T., Nathues, A., De Sanctis, M. C., Jaumann, R., Konopliv, A. S., Preusker, F., Asmar, S. W., Park, R. S., Gaskell, R., Keller, H. U., Mottola, S., Roatsch, T., Scully, J. E. C., Smith, D. E., Tricarico, P., Toplis, M. J., Christensen, U. R., Feldman, W. C., Lawrence, D. J., McCoy, T. J., Prettyman, T. H., Reedy, R. C., Sykes, M. E., Titus, T. N., (2012), Dawn at Vesta: Testing the Protoplanetary Paradigm, Science, 336, 684-686

Weider, S. Z., Kellett, B. J., Swinyard, B. M., Crawford, I. A., Joy, K. H., Grande, M., Howe, C. J., Huovelin, J., Narendranath, S., Alha, L., Anand, M., Athiray, P. S., Bhandari, N., Carter, J. A., Cook, A. C., d'Uston, L. C., Fernandes, V. A., Gasnault, O., Goswami, J. N., Gow, J. P. D., Holland, A. D., Koschny, D., Lawrence, D. J., Maddison, B. J., Maurice, S., McKay, D. J., Okada, T., Pieters, C., Rothery, D. A., Russell, S. S., Shrivastava, A., Smith, D. R., Wieczorek, M., (2012), The Chandrayaan-1 X-ray Spectrometer: First results, Planetary and Space Science, 60, 217-228

Feldman, William C., Pathare, Asmin, Maurice, Sylvestre, Prettyman, Thomas H., Lawrence, David J., Milliken, Ralph E., Travis, Bryan J., (2011), Mars Odyssey neutron data: 2. Search for buried excess water ice deposits at nonpolar latitudes on Mars, Journal of Geophysical Research-Planets, 116

Hagerty, J. J., Lawrence, D. J., Hawke, B. R., (2011), Thorium abundances of basalt ponds in South Pole-Aitken basin: Insights into the composition and evolution of the far side lunar mantle, Journal of Geophysical Research-Planets, 116

Ho, George C., Krimigis, Stamatios M., Gold, Robert E., Baker, Daniel N., Slavin, James A., Anderson, Brian J., Korth, Haje, Starr, Richard D., Lawrence, David J., McNutt, Ralph L., Jr., Solomon, Sean C., (2011), MESSENGER Observations of Transient Bursts of Energetic Electrons in Mercury's Magnetosphere, Science, 333, 1865-1868

Lawrence, D. J., Hurley, D. M., Feldman, W. C., Elphic, R. C., Maurice, S., Miller, R. S., Prettyman, T. H., (2011), Sensitivity of orbital neutron measurements to the thickness and abundance of surficial lunar water, Journal of Geophysical Research-Planets, 116

Lawrence, David J., (2011), Water on the Moon, Nature Geoscience, 4, 586-588

Maurice, S., Feldman, W., Diez, B., Gasnault, O., Lawrence, D. J., Pathare, A., Prettyman, T., (2011), Mars Odyssey neutron data: 1. Data processing and models of water-equivalent-hydrogen distribution, Journal of Geophysical Research-Planets, 116

Nittler, Larry R., Starr, Richard D., Weider, Shoshana Z., McCoy, Timothy J., Boynton, William V., Ebel, Denton S., Ernst, Carolyn M., Evans, Larry G., Goldsten, John O., Hamara, David K., Lawrence, David J., McNutt, Ralph L., Jr., Schlemm, Charles E., II, Solomon, Sean C., Sprague, Ann L., (2011), The Major-Element Composition of Mercury's Surface from MESSENGER X-ray Spectrometry, Science, 333, 1847-1850

Peplowski, P. N., Hamara, D. K., Lawrence, D. J., McCoy, T. J., Boynton, W. V., Evans, L. G., Rhodes, E. A., Solomon, S. C., Nittler, L. R., Sprague, A. L., (2011), Abundances Of Radioactive Elements On The Surface Of Mercury: First Results From The Messenger Gamma-Ray Spectrometer, Meteoritics & Planetary Science, 46, A185

Peplowski, Patrick N., Blewett, David T., Denevi, Brett W., Evans, Larry G., Lawrence, David J., Nittler, Larry R., Rhodes, Edgar A., Selby, Christina M., Solomon, Sean C., (2011), Mapping iron abundances on the surface of Mercury: Predicted spatial resolution of the MESSENGER Gamma-Ray Spectrometer, Planetary and Space Science, 59, 1654-1658

Peplowski, Patrick N., Evans, Larry G., Hauck, Steven A., II, McCoy, Timothy J., Boynton, William V., Gillis-Davis, Jeffery J., Ebel, Denton S., Goldsten, John O., Hamara, David K., Lawrence, David J., McNutt, Ralph L., Jr., Nittler, Larry R., Solomon, Sean C., Rhodes, Edgar A., Sprague, Ann L., Starr, Richard D., Stockstill-Cahill, Karen R., (2011), Radioactive Elements on Mercury's Surface from MESSENGER: Implications for the Planet's Formation and Evolution, Science, 333, 1850-1852

Rhodes, Edgar A., Evans, Larry G., Nittler, Larry R., Starr, Richard D., Sprague, Ann L., Lawrence, David J., Mccoy, Timothy J., Stockstill-Cahill, Karen R., Goldsten, John O., Peplowski, Patrick N., Hamara, David K., Boynton, William V., Solomon, Sean C., (2011), Analysis of MESSENGER Gamma-Ray Spectrometer data from the Mercury flybys, Planetary and Space Science, 59, 1829-1841

Feldman, William C., Lawrence, David J., Goldsten, John O., Gold, Robert E., Baker, Daniel N., Haggerty, Dennis K., Ho, George C., Krucker, Saem, Lin, Robert P., Mewaldt, Richard A., Murphy, Ronald J., Nittler, Larry R., Rhodes, Edgar A., Slavin, James A., Solomon, Sean C., Starr, Richard D., Vilas, Faith, Vourlidas, Angelos, (2010), Evidence for extended acceleration of solar flare ions from 1-8 MeV solar neutrons detected with the MESSENGER Neutron Spectrometer, Journal of Geophysical Research: Space Physics, 115

Lawrence, David J., Elphic, Richard C., Feldman, William C., Funsten, Herbert O., Prettyman, Thomas H., (2010), Performance of Orbital Neutron Instruments for Spatially Resolved Hydrogen Measurements of Airless Planetary Bodies, Astrobiology, 10, 183-200

Lawrence, David J., Feldman, William C., Goldsten, John O., McCoy, Timothy J., Blewett, David T., Boynton, William V., Evans, Larry G., Nittler, Larry R., Rhodes, Edgar A., Solomon, Sean C., (2010), Identification and measurement of neutron-absorbing elements on Mercury's surface, Icarus, 209, 195-209

Crawford, I. A., Joy, K. H., Kellett, B. J., Grande, M., Anand, M., Bhandari, N., Cook, A. C., d'Uston, L., Fernandes, V. A., Gasnault, O., Goswami, J., Howe, C. J., Huovelin, J., Koschny, D., Lawrence, D. J., Maddison, B. J., Maurice, S., Narendranath, S., Pieters, C., Okada, T., Rothery, D. A., Russell, S. S., Sreekumar, P., Swinyard, B., Wieczorek, M., Wilding, M., (2009), The scientific rationale for the C1XS X-ray spectrometer on India's Chandrayaan-1 mission to the moon, Planetary and Space Science, 57, 725-734

Hagerty, J. J., Lawrence, D. J., Hawke, B. R., Gaddis, L. R., (2009), Thorium abundances on the Aristarchus plateau: Insights into the composition of the Aristarchus pyroclastic glass deposits, Journal of Geophysical Research-Planets, 114

Hagerty, J. J., Lawrence, D. J., Shearer, C. K., Hawke, B. R., (2009), Integrating lunar sample data with Lunar Prospector thorium data: Insights into the thermal and magmatic evolution of the Moon, Geochimica Et Cosmochimica Acta, 73, A485

Lawrence, David J., Feldman, William C., Goldsten, John O., Solomon, Sean C., (2009), Using MESSENGER neutron spectrometer data to identify neutron-absorbing elements on Mercury's Surface, Geochimica Et Cosmochimica Acta, 73, A729

Swinyard, B. M., Joy, K. H., Kellett, B. J., Crawford, I. A., Grande, M., Howe, C. J., Fernandes, V. A., Gasnault, O., Lawrence, D. J., Russell, S. S., Wieczorek, M. A., Foing, B. H., SMART-1 Team, (2009), X-ray fluorescence observations of the moon by SMART-1/D-CIXS and the first detection of Ti K alpha from the lunar surface, Planetary and Space Science, 57, 744-750

Elphic, R. C., Chu, P., Hahn, S., James, M. R., Lawrence, D. J., Prettyman, T. H., Johnson, J. B., Podgorney, R. K., (2008), Surface and downhole prospecting tools for planetary exploration: Tests of neutron and gamma ray probes, Astrobiology, 8, 639-U15

Feldman, W. C., Bourke, M. C., Elphic, R. C., Maurice, S., Bandfield, J., Prettyman, T. H., Diez, B., Lawrence, D. J., (2008), Hydrogen content of sand dunes within Olympia Undae, Icarus, 196, 422-432

Lawrence, Samuel J., Hawke, B. Ray, Gillis-Davis, Jeffrey J., Taylor, G. Jeffrey, Lawrence, David J., Cahill, Joshua T., Hagerty, Justin J., Lucey, Paul G., Smith, Gregory A., Keil, Klaus, (2008), Composition and origin of the Dewar geochemical anomaly, Journal of Geophysical Research-Planets, 113

Solomon, Sean C., McNutt, Ralph L., Jr., Watters, Thomas R., Lawrence, David J., Feldman, William C., Head, James W., Krimigis, Stamatios M., Murchie, Scott L., Phillips, Roger J., Slavin, James A., Zuber, Maria T., (2008), Return to Mercury: A global perspective on MESSENGER's first mercury flyby, Science, 321, 59-62

Elphic, R. C., Eke, V. R., Teodoro, L. F. A., Lawrence, D. J., Bussey, D. B. J., (2007), Models of the distribution and abundance of hydrogen at the lunar south pole, Geophysical Research Letters, 34

Lawrence, D. J., Puetter, R. C., Elphic, R. C., Feldman, W. C., Hagerty, J. J., Prettyman, T. H., Spudis, P. D., (2007), Global spatial deconvolution of Lunar Prospector Th abundances, Geophysical Research Letters, 34

Hagerty, J. J., Lawrence, D. J., Hawke, B. R., Vaniman, D. T., Elphic, R. C., Feldman, W. C., (2006), Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon, Journal of Geophysical Research-Planets, 111

McKinney, GW, Lawrence, DJ, Prettyman, TH, Elphic, RC, Feldman, WC, Hagerty, JJ, (2006), MCNPX benchmark for cosmic ray interactions with the Moon, Journal of Geophysical Research-Planets, 111

Prettyman, T. H., Hagerty, J. J., Elphic, R. C., Feldman, W. C., Lawrence, D. J., McKinney, G. W., Vaniman, D. T., (2006), Elemental composition of the lunar surface: Analysis of gamma ray spectroscopy data from Lunar Prospector, Journal of Geophysical Research-Planets, 111

Feldman, WC, Prettyman, TH, Maurice, S, Nelli, S, Elphic, R, Funsten, HO, Gasnault, O, Lawrence, DJ, Murphy, JR, Tokar, RL, Vaniman, DT, (2005), Topographic control of hydrogen deposits at low latitudes to midlatitudes of Mars, Journal of Geophysical Research-Planets, 110

Hagerty, JJ, Lawrence, DJ, Hawke, BR, Vaniman, DT, Elphic, RC, Feldman, WC, (2005), Thorium abundances at lunar red spots: Implications for geochemically evolved, non-mare volcanism on the Moon, Meteoritics & Planetary Science, 40, A62

Hawke, BR, Gillis, JJ, Giguere, TA, Blewett, DT, Lawrence, DJ, Lucey, PG, Smith, GA, Spudis, PD, Taylor, GJ, (2005), Remote sensing and geologic studies of the Balmer-Kapteyn region of the Moon, Journal of Geophysical Research-Planets, 110

Lawrence, DJ, Elphic, RC, Feldman, WC, Gasnault, O, Hagerty, JJ, Maurice, S, Prettyman, TH, (2005), The Lunar Prospector gamma ray and neutron spectrometers: Overview of lunar global composition measurements, Meteoritics & Planetary Science, 40, A90

Lawson, SL, Feldman, WC, Lawrence, DJ, Moore, KR, Elphic, RC, Belian, RD, Maurice, S, (2005), Recent outgassing from the lunar surface: The Lunar Prospector Alpha Particle Spectrometer, Journal of Geophysical Research-Planets, 110

Feldman, WC, Ahola, K, Barraclough, BL, Belian, RD, Black, RK, Elphic, RC, Everett, DT, Fuller, KR, Kroesche, J, Lawrence, DJ, Lawson, SL, Longmire, JL, Maurice, S, Miller, MC, Prettyman, TH, Storms, SA, Thornton, GW, (2004), Gamma-Ray, Neutron, and Alpha-Particle Spectrometers for the Lunar Prospector mission, Journal of Geophysical Research-Planets, 109

Feldman, WC, Head, JW, Maurice, S, Prettyman, TH, Elphic, RC, Funsten, HO, Lawrence, DJ, Tokar, RL, Vaniman, DT, (2004), Recharge mechanism of near-equatorial hydrogen on Mars: Atmospheric redistribution or sub-surface aquifer, Geophysical Research Letters, 31

Feldman, WC, Mellon, MT, Maurice, S, Prettyman, TH, Carey, JW, Vaniman, DT, Bish, DL, Fialips, CI, Chipera, SJ, Kargel, JS, Elphic, RC, Funsten, HO, Lawrence, DJ, Tokar, RL, (2004), Hydrated states of MgSO4 at equatorial latitudes on Mars, Geophysical Research Letters, 31

Feldman, WC, Prettyman, TH, Maurice, S, Plaut, JJ, Bish, DL, Vaniman, DT, Mellon, MT, Metzger, AE, Squyres, SW, Karunatillake, S, Boynton, WV, Elphic, RC, Funsten, HO, Lawrence, DJ, Tokar, RL, (2004), Global distribution of near-surface hydrogen on Mars, Journal of Geophysical Research-Planets, 109

Lawrence, D. J., Maurice, S., Feldman, W. C., (2004), Gamma-ray measurements from Lunar Prospector: Time series data reduction for the gamma-ray spectrometer, Journal of Geophysical Research-Planets, 109

Prettyman, TH, Feldman, WC, Mellon, MT, McKinney, GW, Boynton, WV, Karunatillake, S, Lawrence, DJ, Maurice, S, Metzger, AE, Murphy, JR, Squyres, SW, Starr, RD, Tokar, RL, (2004), Composition and structure of the Martian surface at high southern latitudes from neutron spectroscopy, Journal of Geophysical Research-Planets, 109

Young, DT, Crary, FJ, Nordholt, JE, Bagenal, F, Boice, D, Burch, JL, Eviatar, A, Goldstein, R, Hanley, JJ, Lawrence, DJ, McComas, DJ, Meier, R, Reisenfeld, D, Sauer, K, Wiens, RC, (2004), Solar wind interactions with Comet 19P/Borrelly, Icarus, 167, 80-88

Dunkin, SK, Grande, M, Casanova, I, Fernandes, V, Heather, DJ, Kellett, B, Muinonen, K, Russell, SS, Browning, R, Waltham, N, Parker, D, Kent, B, Perry, CH, Swinyard, B, Perry, A, Feraday, J, Howe, C, Phillips, K, McBride, G, Huovelin, J, Muhli, P, Hakala, PJ, Vilhu, O, Thomas, N, Hughes, D, Alleyne, H, Grady, M, Lundin, R, Barabash, S, Baker, D, Clark, PE, Murray, CD, Guest, J, d'Uston, LC, Maurice, S, Foing, B, Christou, A, Owen, C, Charles, P, Laukkanen, J, Koskinen, H, Kato, M, Sipila, K, Nenonen, S, Holmstrom, M, Bhandari, N, Elphic, R, Lawrence, D, (2003), Scientific rationale for the D-CIXS X-ray spectrometer on board ESA's SMART-1 mission to the Moon, Planetary and Space Science, 51, 435-442

Genetay, I, Maurice, S, Feldman, WC, Gasnault, O, Lawrence, DJ, Elphic, RC, d'Uston, C, Binder, AB, (2003), Elemental content from 0 to 500 keV neutrons: Lunar Prospector results, Planetary and Space Science, 51, 271-280

Grande, M, Browning, R, Waltham, N, Parker, D, Dunkin, SK, Kent, B, Kellett, B, Perry, CH, Swinyard, B, Perry, A, Feraday, J, Howe, C, McBride, G, Phillips, K, Huovelin, J, Muhli, P, Hakala, PJ, Vilhu, O, Laukkanen, J, Thomas, N, Hughes, D, Alleyne, H, Grady, M, Lundin, R, Barabash, S, Baker, D, Clark, PE, Murray, CD, Guest, J, Casanova, I, d'Uston, LC, Maurice, S, Foing, B, Heather, DJ, Fernandes, V, Muinonen, K, Russell, SS, Christou, A, Owen, C, Charles, P, Koskinen, H, Kato, M, Sipila, K, Nenonen, S, Holmstrom, M, Bhandari, N, Elphic, R, Lawrence, D, (2003), The D-CIXS X-ray mapping spectrometer on SMART-1, Planetary and Space Science, 51, 427-433

Hahn, S, Elphic, R, Murphy, T, Hodgson, M, Byrd, R, Longmire, J, Lawrence, D, Barraclough, B, Fuller, K, Prettyman, T, Meier, M, Dors, E, Funsten, H, Belian, R, Patrick, D, Moore, T, Sweet, M, Burczyk, L, Williford, R, Clanton, C, (2003), A validation payload for space and atmospheric nuclear event detection, Ieee Transactions on Nuclear Science, 50, 1175-1181

Hawke, BR, Lawrence, DJ, Blewett, DT, Lucey, PG, Smith, GA, Spudis, PD, Taylor, GJ, (2003), Hansteen Alpha: A volcanic construct in the lunar highlands, Journal of Geophysical Research-Planets, 108

Lawrence, DJ, Elphic, RC, Feldman, WC, Prettyman, TH, Gasnault, O, Maurice, S, (2003), Small-area thorium features on the lunar surface, Journal of Geophysical Research-Planets, 108

Little, RC, Feldman, WC, Maurice, S, Genetay, I, Lawrence, DJ, Lawson, SL, Gasnault, O, Barraclough, BL, Elphic, RC, Prettyman, TH, Binder, AB, (2003), Latitude variation of the subsurface lunar temperature: Lunar Prospector thermal neutrons, Journal of Geophysical Research-Planets, 108

Nordholt, JE, Reisenfeld, DB, Wiens, RC, Gary, SP, Crary, F, Delapp, DM, Elphic, RC, Funsten, HO, Hanley, JJ, Lawrence, DJ, McComas, DJ, Shappirio, M, Steinberg, JT, Wang, J, Young, DT, (2003), Deep Space 1 encounter with Comet 19P/Borrelly: Ion composition measurements by the PEPE mass spectrometer, Geophysical Research Letters, 30

Prettyman, TH, Feldman, WC, Ameduri, FP, Barraclough, BL, Cascio, EW, Fuller, KR, Funsten, HO, Lawrence, DJ, McKinney, GW, Russell, CT, Soldner, SA, Storms, SA, Szeles, C, Tokar, RL, (2003), Gamma-ray and neutron spectrometer for the dawn mission to 1 Ceres and 4 Vesta, Ieee Transactions on Nuclear Science, 50, 1190-1197

Chevrel, SD, Pinet, PC, Daydou, Y, Maurice, S, Lawrence, DJ, Feldman, WC, Lucey, PG, (2002), Integration of the Clementine UV-VIS spectral reflectance data and the Lunar Prospector gamma-ray spectrometer data: A global-scale multielement analysis of the lunar surface using iron, titanium, and thorium abundances, Journal of Geophysical Research-Planets, 107

Elphic, RC, Lawrence, DJ, Feldman, WC, Barraclough, BL, Gasnault, OM, Maurice, S, Lucey, PG, Blewett, DT, Binder, AB, (2002), Lunar prospector neutron spectrometer constraints on TiO2, Journal of Geophysical Research-Planets, 107

Feldman, WC, Boynton, WV, Tokar, RL, Prettyman, TH, Gasnault, O, Squyres, SW, Elphic, RC, Lawrence, DJ, Lawson, SL, Maurice, S, McKinney, GW, Moore, KR, Reedy, RC, (2002), Global distribution of neutrons from Mars: Results from Mars Odyssey, Science, 297, 75-78

Feldman, WC, Gasnault, O, Maurice, S, Lawrence, DJ, Elphic, RC, Lucey, PG, Binder, AB, (2002), Global distribution of lunar composition: New results from Lunar Prospector, Journal of Geophysical Research-Planets, 107

Gasnault, O, Feldman, WC, d'Uston, C, Lawrence, DJ, Maurice, S, Chevrel, SD, Pinet, PC, Elphic, RC, Genetay, I, Moore, KR, (2002), Statistical analysis of thorium and fast neutron data at the lunar surface, Journal of Geophysical Research-Planets, 107

Johnson, JR, Feldman, WC, Lawrence, DJ, Maurice, S, Swindle, TD, Lucey, PG, (2002), Lunar Prospector epithermal neutrons from impact craters and landing sites: Implications for surface maturity and hydrogen distribution, Journal of Geophysical Research-Planets, 107

Lawrence, DJ, Feldman, WC, Elphic, RC, Little, RC, Prettyman, TH, Maurice, S, Lucey, PG, Binder, AB, (2002), Iron abundances on the lunar surface as measured by the Lunar Prospector gamma-ray and neutron spectrometers, Journal of Geophysical Research-Planets, 107

Prettyman, TH, Feldman, WC, Fuller, KR, Storms, SA, Soldner, SA, Szeles, C, Ameduri, FP, Lawrence, DJ, Browne, MC, Moss, CE, (2002), CdZnTe gamma-ray spectrometer for orbital etary missions, Ieee Transactions on Nuclear Science, 49, 1881-1886

Tokar, RL, Feldman, WC, Prettyman, TH, Moore, KR, Lawrence, DJ, Elphic, RC, Kreslavsky, MA, Head, JW, Mustard, JF, Boynton, WV, (2002), Ice concentration and distribution near the south pole of Mars: Synthesis of odyssey and global surveyor analyses, Geophysical Research Letters, 29

Feldman, W. C., Maurice, S., Lawrence, D. J., Little, R. C., Lawson, S. L., Gasnault, O., Wiens, R. C., Barraclough, B. L., Elphic, R. C., Prettyman, T. H., Steinberg, J. T., Binder, A. B., (2001), Evidence for water ice near the lunar poles, Journal of Geophysical Research-Planets, 106, 23231-23251

Su, YJ, Thomsen, MF, Borovsky, JE, Elphic, RC, Lawrence, DJ, McComas, DJ, (2001), Plasmaspheric observations at geosynchronous orbit, Journal of Atmospheric and Solar-Terrestrial Physics, 63, 1185-1197

Su, YJ, Thomsen, MF, Borovsky, JE, Lawrence, DJ, (2001), A comprehensive survey of plasmasphere refilling at geosynchronous orbit, Journal of Geophysical Research-Space Physics, 106, 25615-25629

Elphic, RC, Lawrence, DJ, Feldman, WC, Barraclough, BL, Maurice, S, Binder, AB, Lucey, PG, (2000), Lunar rare earth element distribution and ramifications for FeO and TiO2: Lunar Prospector neutron spectrometer observations, Journal of Geophysical Research-Planets, 105, 20333-20345

Feldman, W. C., Lawrence, D. J., Elphic, R. C., Barraclough, B. L., Maurice, S., Genetay, I., Binder, A. B., (2000), Polar hydrogen deposits on the Moon, Journal of Geophysical Research-Planets, 105, 4175-4195

Feldman, WC, Lawrence, DJ, Elphic, RC, Vaniman, DT, Thomsen, DR, Barraclough, BL, Maurice, S, Binder, AB, (2000), Chemical information content of lunar thermal and epithermal neutrons, Journal of Geophysical Research-Planets, 105, 20347-20363

Lawrence, DJ, Feldman, WC, Barraclough, BL, Binder, AB, Elphic, RC, Maurice, S, Miller, MC, Prettyman, TH, (2000), Thorium abundances on the lunar surface, Journal of Geophysical Research-Planets, 105, 20307-20331

Little, RC, Feldman, WC, Lawrence, DJ, Maurice, S, ANS, (2000), Temperature dependence of thermal neutrons from the moon, Proceedings of the Topical Meeting on Radiation Protection For Our National Priorities: Medicine, the Environment, and the Legacy, 463-469

Wang, J, Brinza, DE, Young, DT, Nordholt, JE, Polk, JE, Henry, MD, Goldstein, R, Hanley, JJ, Lawrence, DJ, Shappirio, M, (2000), Deep Space One investigations of ion propulsion plasma environment, Journal of Spacecraft and Rockets, 37, 545-555

Feldman, WC, Barraclough, BL, Fuller, KR, Lawrence, DJ, Maurice, S, Miller, MC, Prettyman, TH, Binder, AB, (1999), The Lunar Prospector gamma-ray and neutron spectrometers, Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 422, 562-566

Feldman, WC, Maurice, S, Lawrence, DJ, Barraclough, BL, Elphic, RC, Binder, AB, (1999), No ice on the moon? Response, Science, 285, 531-532

Lawrence, DJ, Barbier, LM, Beatty, JJ, Binns, WR, Christian, ER, Crary, DJ, Ficenec, DJ, Hink, PL, Klarmann, J, Krombel, KE, Mitchell, JW, Rauch, BF, Sposato, SH, Streitmatter, RE, Waddington, CJ, (1999), Large-area scintillating-fiber time-of-flight/hodoscope detectors for particle astrophysics experiments, Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 420, 402-415

Lawrence, DJ, Feldman, WC, Barraclough, BL, Binder, AB, Elphic, RC, Maurice, S, Miller, MC, Prettyman, TH, (1999), High resolution measurements of absolute thorium abundances on the lunar surface, Geophysical Research Letters, 26, 2681-2684

Lawrence, DJ, Thomsen, MF, Borovsky, JE, McComas, DJ, (1999), Measurements of early and late time plasmasphere refilling as observed from geosynchronous orbit, Journal of Geophysical Research-Space Physics, 104, 14691-14704

Elphic, RC, Lawrence, DJ, Feldman, WC, Barraclough, BL, Maurice, S, Binder, AB, Lucey, PG, (1998), Lunar Fe and Ti abundances: Comparison of lunar prospector and Clementine data, Science, 281, 1493-1496

Feldman, W. C., Barraclough, B. L., Maurice, S., Elphic, R. C., Lawrence, D. J., Thomsen, D. R., Binder, A. B., (1998), Major compositional units of the moon: Lunar prospector thermal and fast neutrons, Science, 281, 1489-1493

Feldman, W. C., Maurice, S., Binder, A. B., Barraclough, B. L., Elphic, R. C., Lawrence, D. J., (1998), Fluxes of fast and epithermal neutrons from Lunar Prospector: Evidence for water ice at the lunar poles, Science, 281, 1496-1500

Lawrence, DJ, Feldman, WC, Barraclough, BL, Binder, AB, Elphic, RC, Maurice, S, Thomsen, DR, (1998), Global elemental maps of the moon: The Lunar Prospector gamma-ray spectrometer, Science, 281, 1484-1489

Lawrence, DJ, Feldman, WC, Binder, AB, Maurice, S, Barraclough, BL, Elphic, RC, (1998), Mapping the elemental composition of the moon: Current results of the lunar prospector gamma-ray spectrometer, Meteoritics & Planetary Science, 33, A92

Reedy, RC, Feldman, WC, Barraclough, BL, Binder, AB, Elphic, RC, Lawrence, DJ, Maurice, S, Masarik, J, (1998), Fast neutrons from the moon: Measured and calculated fluxes., Meteoritics & Planetary Science, 33, A127-A128

Lawrence, DJ, Barbier, LM, Beatty, JJ, Binns, WR, Christian, ER, Crary, DJ, Ficenec, DJ, Hink, PL, Klarmann, J, Krombel, KE, Mitchell, JW, Rauch, BF, Streitmatter, RE, Waddington, CJ, INT UNION PURE & APPL PHYS, (1995), The trans-iron galactic element recorder (TIGER) experiment, 24th International Cosmic Ray Conference, Vol 3, 681-684

BINNS, WR, CRARY, DJ, CUMMINGS, AC, GEER, LY, KLARMANN, J, LAWRENCE, DJ, MEWALDT, RA, INT UNION PURE & APPL PHYS, (1993), DETECTION EFFICIENCY OF THE CRIS SCINTILLATING OPTICAL FIBER HODOSCOPE, 23rd International Cosmic Ray Conference, Vol 2, 532-535

LAWRENCE, DJ, BEATTY, JJ, BINNS, WR, KLARMANN, J, INT UNION PURE & APPL PHYS, (1993), Timing Resolution Of A Prototype Time Of Flight Detector For Use On The Ultra-Heavy (Z>26) Element Detector (Uhed), 23rd International Cosmic Ray Conference, Vol 2, 639

CRARY, DJ, BINNS, WR, CUMMINGS, AC, KLARMANN, J, LAWRENCE, DJ, MEWALDT, RA, (1992), A Bevalac Calibration Of A Scintillating Optical Fiber Hodoscope, Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 316, 311-317

LAWRENCE, DJ, QUARLES, CA, (1991), Calibration Of A 2-Photon Coincidence Experiment Using Ba-133, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions With Materials and Atoms, 56-7, 334-336