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2001 Mars Odyssey by R. S. Saunders, R. E. Arvidson, G. D. Badhwar, W. V. Boynton PDF

By R. S. Saunders, R. E. Arvidson, G. D. Badhwar, W. V. Boynton (auth.), Christopher T. Russell (eds.)

ISBN-10: 0306486008

ISBN-13: 9780306486005

ISBN-10: 9401569584

ISBN-13: 9789401569583

Mars, the main liveable of our sister planets, holds a different position in our imaginations and in our area exploration software. totally half NASA's planetary exploration attempt is now dedicated to Mars. Key questions comprise: Has Mars ever harbored lifestyles? Is there existence on Mars now? Will people be ready to continue to exist at the Martian floor? solutions to those questions lie in selecting the current situation of water on Mars and its most likely stock some time past, and in making a choice on the current radiation surroundings of Mars. The 2001 Mars Odyssey project contributes vastly those solutions by way of detecting near-surface water via measurements of neutron flux, from the detection of carbonates, and the quantification of its radiation atmosphere. This publication captures the goals, the layout of the undertaking and the main points of the tools carried to Mars. it's going to be of curiosity to each scientist attracted to partaking within the on-going exploration of Mars from graduate scholars to senior scientists because it presents the historical past info necessary to interpret the various interesting effects now showing from the mission.

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Storms, S. , and Thornton, G. : 2001, The Fast Neutron Flux Spectrum Aboard Mars Odyssey During Cruise, American Geophysical Union, Fall Meeting 2001, abstract #P42A-0550. Feldman, W. , Prettyman, T. , Boynton, W. , Moore, K. , Lawson, S. , Lawrence, D. , and Elphic, R. : 2002a, Initial Results of the Mars Odyssey Neutron Spectrometer at Mars, 33rd Annual Lunar and Planetary Science Conference, March 11-15, 2002, Houston, Texas, abstract no. 1718. Feldman, W. , Boynton, W. , Prettyman, T. , Squyres, S.

Y. BOYNTON ET AL. these gamma rays are not used to map aluminum, as reactions with magnesium and silicon also produce large amounts of 24Na and several prompt reactions also can produce the same gamma rays. , 1973). Most elements are mapped using neutroninelastic-scattering or neutron-capture reactions, which produce excited states of nuclei that decay rapidly to their ground states by emitting characteristic gamma rays. Most elements produce gamma rays by nonelastic scattering reactions where an excited level in a nucleus is populated by an energetic particle and then almost immediately (typically of the order of a picosecond) decays to a lower level.

However, Mars Observer was lost three days prior to orbit insertion, and no gamma-ray data from Mars were obtained. The Mars Odyssey GRS experiment is therefore the first highly capable elemental chemical mapping instrument to successfully orbit Mars. EIE. 8% full-width at half maximum at 662 keY) like NaI(Tl), CsI(Tl) and bismuth germanate (BGO). Substantial improvements in overall scientific performance are possible, however, via use of more advanced detector technology. 3%) made with detectors of germanium (Ge) dates back to Metzger et aZ.

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2001 Mars Odyssey by R. S. Saunders, R. E. Arvidson, G. D. Badhwar, W. V. Boynton (auth.), Christopher T. Russell (eds.)

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