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Record 1 of 7921
A new Mars radiation environment model with visualization
Author and Affiliation:
De Angelis, G.(Old Dominion University, Norfolk, VA 23508, United States)
Clowdsley, M. S.
Singleterry, R. C.
Wilson, J. W.
Abstract: A new model for the radiation environment to be found on the planet Mars due to Galactic Cosmic Rays (OCR) has been developed at the NASA Langley Research Center. Solar modulated primary particles rescaled for Mars conditions are transported through the Martian atmosphere, with temporal properties modeled with variable timescales, down to the surface, with altitude and backscattering patterns taken into account. The Martian atmosphere has been modeled by using the Mars Global Reference Atmospheric Model--version 2001 (Mars-GRAM 2001). The altitude to compute the atmospheric thickness profile has been determined by using a model for the topography based on the data provided by the Mars Orbiter Laser Altimeter (MOLA) instrument on board the Mars Global Surveyor (MGS) spacecraft. The Mars surface composition has been modeled based on averages over the measurements obtained from orbiting spacecraft and at various landing sites, taking into account the possible volatile inventory (e.g., CO2 ice, H2O ice) along with its time variation throughout the Martian year. Particle transport has been performed with the HZETRN heavy ion code. The Mars Radiation Environment Model has been made available worldwide through the Space Ionizing Radiation Effects and Shielding Tools (SIREST) website, a project of NASA Langley Research Center. c2004 COSPAR. Published by Elsevier Ltd. All rights reserved.
Publication Date: Jan 01, 2004
Document ID:
20050193754
(Acquired Aug 02, 2005)
Subject Category: LUNAR AND PLANETARY SCIENCE AND EXPLORATION
Document Type: Journal Article
Publication Information: Advances in space research : the official journal of the Committee on Space Research (COSPAR); Volume 34; 6; 1328-32
Publisher Information: United States
Contract/Grant/Task Num: NCC1-404
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COSMIC RAYS; ENVIRONMENT MODELS; HEAVY IONS; MARS (PLANET); MARS ENVIRONMENT; MODELS; SOLAR ACTIVITY; EXTRATERRESTRIAL ENVIRONMENTS; LINEAR ENERGY TRANSFER (LET); RADIATION DOSAGE; RADIATION EFFECTS; RADIATION MEASUREMENT; SCATTERING
Other Descriptors: COSMIC RADIATION; HEAVY IONS; MARS; MODELS, THEORETICAL; SOLAR ACTIVITY; SPACE FLIGHT/INSTRUMENTATION; SPACECRAFT/INSTRUMENTATION; EXTRATERRESTRIAL ENVIRONMENT; LINEAR ENERGY TRANSFER; RADIATION DOSAGE; RADIATION MONITORING; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S; SCATTERING, RADIATION; NASA CENTER LARC; NASA DISCIPLINE RADIATION HEALTH
Availability Source: Other Sources
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