Collection:
NASA Planetary Photo Journal Collection Collection NASA Planetary Photo Journal Collection Collection
Title:
HEND Maps of Fast Neutrons Title HEND Maps of Fast Neutrons Title
Original Caption Released with Image:
Observations by NASA's 2001 Mars Odyssey spacecraft show a global view of Mars in high-energy, or fast, neutrons. These maps are based on data acquired by the high-energy neutron detector, one of the instruments in the gamma ray spectrometer suite. Fast neutrons, like epithermal neutrons, are sensitive to the presence of hydrogen. Unlike epithermal neutrons, however, they are not affected by the presence of carbon dioxide, which at the time of these observations covered the north polar area as "dry ice" frost. The low flux of fast neutrons (blue and purple colors) in the north polar region suggests an abundance of hydrogen in the soil comparable to that determined in the south from the flux of epithermal neutrons. These observations were acquired during the first two months of mapping operations. Contours of topography are superimposed on these maps for geographic reference. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. Investigators at Arizona State University in Tempe, the University of Arizona in Tucson, and NASA's Johnson Space Center, Houston, operate the science instruments. The gamma-ray spectrometer was provided by the University of Arizona in collaboration with the Russian Aviation and Space Agency, which provided the high-energy neutron detector, and the Los Alamos National Laboratories, New Mexico, which provided the neutron spectrometer. Lockheed Martin Astronautics, Denver, is the prime contractor for the project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. Original_Caption_Rel eased_with_Image Observations by NASA's 2001 Mars Odyssey spacecraft show a global view of Mars in high-energy, or fast, neutrons. These maps are based on data acquired by the high-energy neutron detector, one of the instruments in the gamma ray spectrometer suite. Fast neutrons, like epithermal neutrons, are sensitive to the presence of hydrogen. Unlike epithermal neutrons, however, they are not affected by the presence of carbon dioxide, which at the time of these observations covered the north polar area as "dry ice" frost. The low flux of fast neutrons (blue and purple colors) in the north polar region suggests an abundance of hydrogen in the soil comparable to that determined in the south from the flux of epithermal neutrons. These observations were acquired during the first two months of mapping operations. Contours of topography are superimposed on these maps for geographic reference. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. Investigators at Arizona State University in Tempe, the University of Arizona in Tucson, and NASA's Johnson Space Center, Houston, operate the science instruments. The gamma-ray spectrometer was provided by the University of Arizona in collaboration with the Russian Aviation and Space Agency, which provided the high-energy neutron detector, and the Los Alamos National Laboratories, New Mexico, which provided the neutron spectrometer. Lockheed Martin Astronautics, Denver, is the prime contractor for the project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. Original Caption Released with Image
Addition Date:
2002-05-30 Addition_Date 2002-05-30 Addition Date
Image Credit:
NASA/JPL/University of Arizona/Russian Aviation and Space Agency Image_Credit NASA/JPL/University of Arizona/Russian Aviation and Space Agency Image Credit
Produced By:
University of Arizona Produced_By University of Arizona Produced By
Mission:
2001 Mars Odyssey Mission 2001 Mars Odyssey Mission
Spacecraft:
2001 Mars Odyssey Spacecraft 2001 Mars Odyssey Spacecraft
Target Name:
Mars Target_Name Mars Target Name
Is a satellite of:
Sol (our sun) Is_a_satellite_of Sol (our sun) Is a satellite of
Instrument:
Gamma Ray Spectrometer Suite Instrument Gamma Ray Spectrometer Suite Instrument
Product Size:
1785 samples x 2532 lines Product_Size 1785 samples x 2532 lines Product Size
facet_what:
Sun facet_what Sun facet_what
facet_what:
Polar facet_what Polar facet_what
facet_what:
Spectrometer facet_what Spectrometer facet_what
facet_what:
Mars facet_what Mars facet_what
facet_what:
2001 Mars Odyssey facet_what 2001 Mars Odyssey facet_what
facet_what:
FAST facet_what FAST facet_what
facet_what:
Gamma Ray Spectrometer Suite facet_what Gamma Ray Spectrometer Suite facet_what
facet_where:
Jet Propulsion Laboratory facet_where Jet Propulsion Laboratory facet_where
facet_where:
Denver facet_where Denver facet_where
facet_where:
Mars facet_where Mars facet_where
facet_where:
Arizona facet_where Arizona facet_where
facet_where:
California facet_where California facet_where
facet_where:
Washington facet_where Washington facet_where
facet_where:
New Mexico facet_where New Mexico facet_where
facet_where:
Jet Propulsion Laboratory (JPL) facet_where Jet Propulsion Laboratory (JPL) facet_where
facet_where:
Washington, D.C. facet_where Washington, D.C. facet_where
facet_where:
Johnson Space Center (JSC) facet_where Johnson Space Center (JSC) facet_where
Image #:
PIA03807 Image_# PIA03807 Image #
UID:
SPD-PHOTJ-PIA03807 UID SPD-PHOTJ-PIA03807 UID
orignial url:
http://photojournal… orignial_url http://photojournal… orignial url

HEND Maps of Fast Neutrons

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HEND Maps of Fast Neutrons