Theoretical fluxes of gamma rays from the Martian surface

Kyeong J. Kim, Darrell M. Drake, Robert C. Reedy, Remo M S Williams, William V. Boynton

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Theoretical fluxes of gamma rays escaping the surface of Mars were calculated. These and other calculated fluxes are needed to model the counting rates in the Mars Odyssey gamma ray spectrometer that are used to determine elemental compositions and other results using these measurements. Cross sections for the formation of gamma rays by both thermal and fast neutrons were compiled and evaluated. These evaluated cross sections were used with neutron fluxes calculated with the Monte Carlo N Particle Extended (MCNPX) code to get gamma ray production rates as a function of depth in the Martian surface. The fluxes of these gamma rays as a function of angle at the Martian surface were then calculated using gamma ray attenuation coefficients.

Original languageEnglish (US)
Article numberE03S09
JournalJournal of Geophysical Research: Space Physics
Volume112
Issue number3
DOIs
StatePublished - Mar 20 2007

Fingerprint

Gamma rays
gamma rays
Fluxes
Mars
cross section
Gamma ray production
mars
Gamma ray spectrometers
Neutron flux
spectrometer
gamma ray spectrometers
cross sections
attenuation coefficients
fast neutrons
Neutrons
flux (rate)
thermal neutrons
counting
Chemical analysis
rate

ASJC Scopus subject areas

  • Oceanography
  • Astronomy and Astrophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Geophysics
  • Geochemistry and Petrology

Cite this

Theoretical fluxes of gamma rays from the Martian surface. / Kim, Kyeong J.; Drake, Darrell M.; Reedy, Robert C.; Williams, Remo M S; Boynton, William V.

In: Journal of Geophysical Research: Space Physics, Vol. 112, No. 3, E03S09, 20.03.2007.

Research output: Contribution to journalArticle

Kim, Kyeong J. ; Drake, Darrell M. ; Reedy, Robert C. ; Williams, Remo M S ; Boynton, William V. / Theoretical fluxes of gamma rays from the Martian surface. In: Journal of Geophysical Research: Space Physics. 2007 ; Vol. 112, No. 3.
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