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Numerical modeling of neutron spectra above the Martian surface (preliminary results)

Numerical modeling of neutron spectra above the Martian surface (preliminary results). Krylov A.R., Shvetsov V.N., Timoshenko G.N. 141980, JINR, Dubna, Russia. Soil model. Four elements: Si, O, Fe, H Elements percentage [i] : O – 56.7 w. % Si – 26.6 w. % + H 2 O Fe – 16.7 w. %

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Numerical modeling of neutron spectra above the Martian surface (preliminary results)

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  1. Numerical modeling of neutron spectra above the Martian surface(preliminary results) Krylov A.R., Shvetsov V.N., Timoshenko G.N. 141980, JINR, Dubna, Russia “The First year of HEND operation

  2. Soil model • Four elements: Si, O, Fe, H • Elements percentage [i]: • O – 56.7 w. % • Si – 26.6 w. % + H2O • Fe – 16.7 w. % Joseph Masarik and Robert C. Reedy Journal of Geophysical Research, vol.101, No. E8, p.p. 18,891-18,912, August 25, 1996. “The First year of HEND operation

  3. Soil X-sessions Soil & water densities = 1 g/cm3 “The First year of HEND operation

  4. GCR Astroparticle Physics, 16(2001), 13-46 RUNJOB Collaboration “The First year of HEND operation

  5. GCR “The First year of HEND operation

  6. Computer Codes • LAHET (Los Alamos High Energy Transport), Bertini model for intranuclear cascade + • MCNP4B (Monte Carlo N-Particle) “The First year of HEND operation

  7. Neutron Spectra on 400 km Orbit “The First year of HEND operation

  8. Neutron Spectra on 400 km Orbit “The First year of HEND operation

  9. Neutron Spectra on 400 km Orbit “The First year of HEND operation

  10. Neutron Spectra on 400 km Orbit “The First year of HEND operation

  11. CONCLUSION, PERSPECTIVES • Taking into account the modulation of GCR flux due to Solar activity • Comparison of the results, obtained with different computer codes (different models) & data libraries • Soil content specification • Importance of the “Ratio’s” information “The First year of HEND operation

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