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A New Method for Calculating Low Energy Neutron Flux
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 17, 2006 by SAE International in United States
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A new method is developed for calculating the low energy neutron flux in a space environment which is protected from galactic cosmic rays (GCR) and solar particle events (SPE) by shielding materials. Our calculations are compared with low energy neutron flux flight data recorded on four different STS low earth orbit missions. We also compare our neutron flux calculations with the low energy neutron flux data recorded by MIR.
The low energy neutron flux calculations can be described as a deterministic method for solving the Boltzmann equation for the light ion flux associated with a given environment. Existing Monte Carlo neutron flux simulations associated with the MIR and ISS space stations are also compared with our deterministic method for calculating neutron flux.
CitationSlaba, T., Heinbockel, J., Wilson, J., Blattnig, S. et al., "A New Method for Calculating Low Energy Neutron Flux," SAE Technical Paper 2006-01-2149, 2006, https://doi.org/10.4271/2006-01-2149.
- Wilson, J.W. Analysis of the theory of high-energy ion transport, NASA TN D-8381, 1977.
- Wilson, J.W. Tripathi, R.K. Cucinotta, F.A. Heinbockel, J.H. Tweed, J. Towards a 3D Space Radiation Transport Code, Society of Automotive Engineers, Paper Number 2003-01-2333.
- Wilson, J.W. Tweed, J. Heinbockel, J.H. Tripathi, R.K. Cucinotta, F.A. Mertens, C.J. Advances in Space Radiation Transport Codes, Radiation Health Investigators Workshop, April 27–30, League City Texas, 2003.
- Getselev, I. Rumin, S. Sobolevsky, N. Ufimtsev, M. Podzolko, M. Absorbed dose of secondary neutrons from galactic cosmic rays inside the international space station, Advances in Space Research 34 (2004) 1429–1432.
- Benton, E.R. Benton, E.V. Space radiation dosimetry in low-Earth orbit and beyond, Nuclear Instruments and Methods in Physics Research B 184 (2001) 255–294.
- Benton, E.R. Benton, E.V. Frank, A.L. Neutron dosimetry in low-Earth orbit using passive detectors, Radiation Measurements 33 (2001) 255–263.
- Clowdsley, M.S. A Numerical Solution of the Low Energy Neutron Boltzmann Equation, Ph.D. Thesis, Old Dominion University, May, 1999.
- Feldman, G.A. A Forward-Backward Fluence Model for the Low Energy Neutron Boltzmann Equation, Ph.D. Thesis, Old Dominion University, August 2003.
- Clowdsley, M.S. Heinbockel, J.H. Kaneko, H. Wilson, J.W. Singleterry, R.C. Shinn, J.L. A comparison of the multigroup and collocation methods for solving the low-energy neutron Boltzmann equation, Can. J. Phys. 78: 45–56 (2000).
- Lyagushin, V.I. Dudkin, V.E. Yu. V. Potapov, V.D. Sevastianow, Russian measurements of neutron energy spectra on the MIR orbital station, Radiation Measurements 33 (2001) 313–319.
- Badhwar, G.D. Keith, J.E. Cleghorn, T.F. Neutron measurements jonboard the space shuttle, Radiation Measurements 33 (2001) 235–241.
- Wilson, J.W. Badavi, F.F. Kim, M.Y. Clowdsley, M.S. Heinbockel, J.H. Cucinotta, F.A. Badhwar, G.D. Atwell, W. Houston, S.L. Natural and Induced Environment in Low Earth Orbit, NASA. Tm-2002-211668, May 2002.
- Wilson, J.W. Chun, S.Y. Badavi, F.F. Townsend, L.W. Lamkin, S.L. HZETRN: A Heavy Ion/Nucleon Transport Code for Space Radiations, NASA Technical Paper, TP-3146, December 1991.