Patrick Peplowski Print


  240-228-3979

  Patrick.Peplowski@jhuapl.edu

: SES

:   Nuclear spectroscopist; Experimental nuclear physicist; Radiation physicist

:  Planetary

  Europa Clipper, Radiation, Lunar Prospector, MESSENGER, GRNS, NEAR, XGRS, Van Allen Probes

 
Degree Field of Study Year Attained Institution Name
Ph.D. Physics 2009 Florida State University
M.S. Physics 2005 Florida State University
B.S. Physics 2004 University of Washington

I am an experimental nuclear physicist specializing in nuclear (gamma-ray and neutron) spectroscopy of solar system objects, nuclear astrophysics, and radiation transport modeling. My spaceflight mission experience includes MESSENGER (GRS instrument scientist) and Dawn at Vesta (science team associate). My instrument development experience includes the Engineering Radiation Monitor on the Van Allen Probes, the Radiation Monitor Subystem on the Europa mission, and the GeMini gamma-ray spectrometer being developed under NASA's Maturation of Instrumentation for Solar System Exploration (MatISSE) program. I'm the principal investigator for grants awarded under NASA's Planetary Mission Data Analysis Program (PMDAP), Mars Data Analysis Program (MDAP), and Discovery Data Analysis Program (DDAP). My primary research focus is the elemental composition of Mercury, the Moon, and small solar-system objects (asteroids 433 Eros, 4 Vesta, 16 Psyche, Mars moons). A list of all publications can be found here.

 
AGU Index Category AGU Index Sub-Category
GEOCHEMISTRY Composition of the planets
SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY X-rays, gamma rays, and neutrinos
GEOCHEMISTRY Planetary geochemistry
INTERPLANETARY PHYSICS Cosmic rays
INTERPLANETARY PHYSICS Instruments and techniques
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Mercury
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Moon
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Asteroids
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS Instruments and techniques
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Start Year End Year Description
2010 Current Senior Staff, Johns Hopkins University Applied Physics Laboratory
2009 2010 Post-Doctoral Research Associate, Pacific Northwest National Laboratory
2004 2009 Research Associate, Florida State University John D. Fox Accelerator Facility
2001 2004 Student Assistant, Center for Experimental Nuclear Physics and Astrophysics
No items
Year Description
2011, 2013 APL Technical Achievement Awards
2013 NASA Group Achievement Award, Dawn at Vesta Science Team
2003 Mary Gates Research Training Grant
1999-2000 Washington State Promise Scholarship
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The following publication information was downloaded from http://www.researcherId.com/rid/I-7254-2012.
Baker, Daniel N., Dewey, Ryan M., Lawrence, David J., Goldsten, John O., Peplowski, Patrick N., Korth, Haje, Slavin, James A., Krimigis, Stamatios M., Anderson, Brian J., Ho, George C., McNutt, Ralph L., Jr., Raines, Jim M., Schriver, David, Solomon, Sean C., (2016), Intense energetic electron flux enhancements in Mercury's magnetosphere: An integrated view with high-resolution observations from MESSENGER, Journal of Geophysical Research-Space Physics, 121, 2171-2184

Peplowski, Patrick N., Beck, Andrew W., Lawrence, David J., (2016), Geochemistry of the lunar highlands as revealed by measurements of thermal neutrons, Journal of Geophysical Research-Planets, 121, 388-401

Peplowski, Patrick N., Klima, Rachel L., Lawrence, David J., Ernst, Carolyn M., Denevi, Brett W., Frank, Elizabeth A., Goldsten, John O., Murchie, Scott L., Nittler, Larry R., Solomon, Sean C., (2016), Remote sensing evidence for an ancient carbon-bearing crust on Mercury, Nature Geoscience, 9, 273-+

Beck, Andrew W., Lawrence, David J., Peplowski, Patrick N., Prettyman, Thomas H., McCoy, Timothy J., McSween, Harry Y., Jr., Toplis, Michael J., Yamashita, Naoyuki, (2015), Using HED meteorites to interpret neutron and gamma-ray data from asteroid4 Vesta, Meteoritics & Planetary Science, 50, 1311-1337

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

Feldman, William C., Lawrence, David J., Vestrand, W. Thomas, Baker, Daniel N., Peplowski, Patrick N., Rodgers, Douglas J., (2015), Long-duration neutron production by nonflaring transients in the solar corona, Journal of Geophysical Research-Space Physics, 120, 8247-8266

Lawrence, David J., Anderson, Brian J., Baker, Daniel N., Feldman, William C., Ho, George C., Korth, Haje, McNutt, Ralph L., Peplowski, Patrick N., Solomon, Sean C., Starr, Richard D., Vandegriff, Jon D., Winslow, Reka M., (2015), Comprehensive survey of energetic electron events in Mercury's magnetosphere with data from the MESSENGER Gamma-Ray and Neutron Spectrometer, Journal of Geophysical Research-Space Physics, 120, 2851-2876

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

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

Weider, Shoshana Z., Nittler, Larry R., Starr, Richard D., Crapster-Pregont, Ellen J., Peplowski, Patrick N., Denevi, Brett W., Head, James W., Byrne, Paul K., Hauck, Steven A., II, Ebel, Denton S., Solomon, Sean C., (2015), Evidence for geochemical terranes on Mercury: Global mapping of major elements with MESSENGER's X-Ray Spectrometer, Earth and Planetary Science Letters, 416, 109-120

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

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

Holmes-Siedle, A. G., Goldsten, J. O., Maurer, R. H., Peplowski, P. N., (2014), RadFET Dosimeters in the Belt: the Van Allen Probes on Day 365, Ieee Transactions on Nuclear Science, 61, 948-954

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

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

Denevi, Brett W., Ernst, Carolyn M., Meyer, Heather M., Robinson, Mark S., Murchie, Scott L., Whitten, Jennifer L., Head, James W., Watters, Thomas R., Solomon, Sean C., Ostrach, Lillian R., Chapman, Clark R., Byrne, Paul K., Klimczak, Christian, Peplowski, Patrick N., (2013), The distribution and origin of smooth plains on Mercury, Journal of Geophysical Research-Planets, 118, 891-907

Goldsten, J. O., Maurer, R. H., Peplowski, P. N., Holmes-Siedle, A. G., Herrmann, C. C., Mauk, B. H., (2013), The Engineering Radiation Monitor for the Radiation Belt Storm Probes Mission, Space Science Reviews, 179, 485-502

Holmes-Siedle, A. G., Goldsten, J. O., Maurer, R. H., Peplowski, P. N., IEEE, (2013), RADFET DOSIMETERS IN THE BELT: the VAN ALLEN PROBES ON DAY 365, 2013 14th European Conference on Radiation and Its Effects on Components and Systems (Radecs)

Lawrence, David J., Feldman, William C., Goldsten, John O., Maurice, Sylvestre, Peplowski, Patrick N., Anderson, Brian J., Bazell, David, McNutt, Ralph L., Jr., Nittler, Larry R., Prettyman, Thomas H., Rodgers, Douglas J., Solomon, Sean C., Weider, Shoshana Z., (2013), Evidence for Water Ice Near Mercury's North Pole from MESSENGER Neutron Spectrometer Measurements, Science, 339, 292-296

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

Le Corre, Lucille, Reddy, Vishnu, Schmedemann, Nico, Becker, Kris J., O'Brien, David P., Yamashita, Naoyuki, Peplowski, Patrick N., Prettyman, Thomas H., Li, Jian-Yang, Cloutis, Edward A., Denevi, Brett W., Kneisl, Thomas, Palmer, Eric, Gaskell, Robert W., Nathues, Andreas, Gaffey, Michael J., Mittlefehldt, David W., Garry, William B., Sierks, Holger, Russell, Christopher T., Raymond, Carol A., De Sanctis, Maria C., Ammanito, Eleonora, (2013), Olivine or impact melt: Nature of the "Orange" material on Vesta from Dawn, Icarus, 226, 1568-1594

Maurer, Richard H., Goldsten, John O., Peplowski, Patrick N., Holmes-Siedle, Andrew G., Butler, Michael H., Herrmann, Carl C., Mauk, Barry H., (2013), Early Results From the Engineering Radiation Monitor (ERM) and Solar Cell Monitor on the Van Allen Probes Mission, Ieee Transactions on Nuclear Science, 60, 4053-4058

Mitchell, J. P., Rogachev, G. V., Johnson, E. D., Baby, L. T., Kemper, K. W., Moro, A. M., Peplowski, P., Volya, A. S., Wiedenhoever, I., (2013), Structure of B-8 from elastic and inelastic Be-7 + p scattering, Physical Review C, 87

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

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

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, L4-L4

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

Lawrence, David J., Harmon, John K., Feldman, William C., Goldsten, John O., Paige, David A., Peplowski, Patrick N., Rhodes, Edgar A., Selby, Christina M., Solomon, Sean C., (2011), Predictions of MESSENGER Neutron Spectrometer measurements for Mercury's north polar region, Planetary and Space Science, 59, 1665-1669

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

Mitchell, J. P., Rogachev, G. V., Johnson, E. D., Baby, L. T., Kemper, K. W., Moro, A. M., Peplowski, P. N., Volya, A., Wiedenhoever, I., (2010), Low-lying states in B-8, Physical Review C, 82

Ressler, J. J., Caggiano, J. A., Francy, C. J., Peplowski, P. N., Allmond, J. M., Beausang, C. W., Bernstein, L. A., Bleuel, D. L., Burke, J. T., Fallon, P., Hecht, A. A., Jordan, D. V., Lesher, S. R., McMahan, M. A., Palmer, T. S., Phair, L., Scielzo, N. D., Swearingen, P. G., Warren, G. A., Wiedeking, M., (2010), Fission fragment isomers populated via Li-6+Th-232, Physical Review C, 81

Warren, Glen A., Detwiler, Rebecca S., Peplowski, Patrick N., IEEE, (2010), Applications of Nuclear Resonance Fluorescence, 2010 Ieee Nuclear Science Symposium Conference Record (Nss/mic), 534-541

Peplowski, P. N., Baby, L. T., Wiedenhover, I., Dekat, S. E., Diffenderfer, E., Gay, D. L., Grubor-Urosevic, O., Hoflich, P., Kaye, R. A., Keeley, N., Rojas, A., Volya, A., (2009), Lowest l=0 proton resonance in Si-26 and implications for nucleosynthesis of Al-26, Physical Review C, 79

Warren, Glen, Caggiano, Jac, Peplowski, Patrick, BharuthRam, K, (2009), Potential Applications of Nuclear Resonance Fluorescence, International Conference on Applications of Nuclear Techniques, 1194, 106-119

Johnson, E. D., Rogachev, G. V., Mukhamedzhanov, A. M., Baby, L. T., Brown, S., Cluff, W. T., Crisp, A. M., Diffenderfer, E., Goldberg, V. Z., Green, B. W., Hinners, T., Hoffman, C. R., Kemper, K. W., Momotyuk, O., Peplowski, P., Pipidis, A., Reynolds, R., Roeder, B. T., (2006), Astrophysical reaction rate for the neutron-generator reaction C-13(alpha,n)O-16 in asymptotic giant branch stars, Physical Review Letters, 97