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Radiation Assessment Detector (RAD)

Radiation Assessment Detector (RAD). D.M. Hassler, A. Posner, M. Bullock, S. Rafkin, D. Grinspoon (Southwest Research Institute) R.F. Wimmer-Schweingruber, R. Beaujean, S. Burmeister, R. Muller-Mellin, S. Bottcher (Univ. of Kiel) G. Reitz (DLR/Koln) F. Cucinotta, T. Cleghorn (NASA/JSC).

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Radiation Assessment Detector (RAD)

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  1. Radiation Assessment Detector (RAD) D.M. Hassler, A. Posner, M. Bullock, S. Rafkin, D. Grinspoon (Southwest Research Institute) R.F. Wimmer-Schweingruber, R. Beaujean, S. Burmeister, R. Muller-Mellin, S. Bottcher (Univ. of Kiel) G. Reitz (DLR/Koln) F. Cucinotta, T. Cleghorn (NASA/JSC)

  2. Validating Radiation Transport Codes and Models Penetration Depths for Various Energy Particles. Secondary Particle Production from Galactic Cosmic Rays

  3. Atmospheric Shielding at Mars: Strong dependence on atmospheric column mass

  4. HEND/Odyssey: Global Map of Neutron Albedo of Mars

  5. RAD Time Resolution Required to Characterize a Solar Particle Event (SPE)

  6. Astronaut Safety: Determining the Radiation Dose Rate for Humans on Mars GCRs produce near-constant background flux of radiation, modulated by solar cycle. Composed mostly H+ and He2+, but heavy ions contribute disproportionately to the Dose Equivalent due to their high quality factor, Q. (Wilson et al. 1997)

  7. Preparation for Human Exploration of Mars: Astronaut Safety Requires Monitoring Certain Particle Species

  8. MSL RAD Measurement Capability

  9. RAD Instrument Overview RAD proto-type (top) being tested at Brookhaven National Lab (bottom)

  10. RAD Species Identification Approach:Distinguish Ion Species using dE/dx vs E method Ion kinetic energy deposited per unit length: Bethe-Bloch Equation: Ion Identification: substitute v2 with: Thus:

  11. RAD Species Identification uses dE/dx vs E Method

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