Calculations of cosmic-ray helium transport in shielding materials

Cucinotta, F A

Title: Calculations of cosmic-ray helium transport in shielding materials

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Abstract

The transport of galactic cosmic-ray helium nuclei and their secondaries through bulk shielding is considered using the straight-ahead approximation to the Boltzmann equation. A data base for nuclear interaction cross sections and secondary particle energy spectra for high-energy light-ion breakup is presented. The importance of the light ions H-2, H-3, and He-3 for cosmic-ray risk estimation is discussed, and the estimates of the fractional contribution to the neutron flux from helium interactions compared with other particle interactions are presented using a 1977 solar minimum cosmic-ray spectrum.

Authors:: Cucinotta, F A

Publication Date:: Mon Nov 01 00:00:00 EST 1993

Research Org.:: National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center

OSTI Identifier:: 5406234

Report Number(s):: N-94-17666; NASA-TP-3354; L-17225; NAS-1.60:3354
CNN: RTOP 199-45-16-11

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COSMIC RADIATION; BIOLOGICAL SHIELDING; RADIATION PROTECTION; SPACE VEHICLES; HELIUM ISOTOPES; HYDROGEN ISOTOPES; IONIZING RADIATIONS; ISOTOPES; RADIATIONS; SHIELDING; VEHICLES; 663620* - Physics of Radiations Other Than Neutrons- (1992-)

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                    Cucinotta, F A. Calculations of cosmic-ray helium transport in shielding materials.  United States: N. p., 1993. 
        Web.

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                    Cucinotta, F A. Calculations of cosmic-ray helium transport in shielding materials.  United States.

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                    Cucinotta, F A. 1993.  
        "Calculations of cosmic-ray helium transport in shielding materials".  United States.

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@article{osti_5406234,

  title        = {Calculations of cosmic-ray helium transport in shielding materials},

  author       = {Cucinotta, F A},

  abstractNote = {The transport of galactic cosmic-ray helium nuclei and their secondaries through bulk shielding is considered using the straight-ahead approximation to the Boltzmann equation. A data base for nuclear interaction cross sections and secondary particle energy spectra for high-energy light-ion breakup is presented. The importance of the light ions H-2, H-3, and He-3 for cosmic-ray risk estimation is discussed, and the estimates of the fractional contribution to the neutron flux from helium interactions compared with other particle interactions are presented using a 1977 solar minimum cosmic-ray spectrum.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5406234},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Nov 01 00:00:00 EST 1993},

  month        = {Mon Nov 01 00:00:00 EST 1993}

}

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