This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical Study of the Generation of Linear Energy Transfer Spectra for Space Radiation Applications
Technical Paper
2006-01-2144
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In analyzing charged particle spectra in space due to galactic cosmic rays (GCR) and solar particle events (SPE), the conversion of particle energy spectra into linear energy transfer (LET) distributions is a convenient guide in assessing biologically significant components of these spectra. The mapping of LET to energy is triple valued and can be defined only on open energy subintervals where the derivative of LET with respect to energy is not zero. Presented here is a well-defined numerical procedure which allows for the generation of LET spectra on the open energy subintervals that are integrable in spite of their singular nature. The efficiency and accuracy of the numerical procedures is demonstrated by providing examples of computed differential and integral LET spectra and their equilibrium components for historically large SPEs and 1977 solar minimum GCR environments. Due to the biological significance of tissue, all simulations are done with tissue as the target material.
Recommended Content
Citation
Badavi, F., Wilson, J., Abrahms, B., and Hunter, A., "Numerical Study of the Generation of Linear Energy Transfer Spectra for Space Radiation Applications," SAE Technical Paper 2006-01-2144, 2006, https://doi.org/10.4271/2006-01-2144.Also In
References
- Radiation Quantities and Units International Commission on Radiation Units and Measurements: 1980
- Hunter, A. Dosimetric Response of Candidate Aliphatic Polymers as Shielding Materials to Space Ionizing Radiation NASA Langley Research Center LARSS Program Aug 2005
- Wilson, J. W. Badavi, F. F. A Study of the generation of Linear Energy Transfer Spectra for Space Radiations NASA 1992
- Schaefer, H. J. Exposure Hazards From Cosmic Radiation Beyond the Stratosphere and in Free Space J. Aviation Med. 23 no. 4 Aug. 1952 334 344
- The Quality Factor in Radiation Protection International Commission on Radiation Units and Measurements Apr. 4 1986
- Katz, R. Ackerson, B. Homayoonfar, M. Sharma, S. C. Inactivation of Cells by Heavy Ion Bombardment Radiat. Res. 47 1971 402 425
- Wilson, J. W. Badavi F. F. Cucinotta, F. A. Shinn, J. L. Badhwar, G. D. Silberberg, R. Tsao, C. H. Townsend, L. W. Tripathi, R. K. HZETRN: Description of a Free-Space Ion and Nucleon Transport and Shielding Computer Program NASA Technical Paper 3495 May 1995
- Wilson, J. W. Townsend, L. W. Bidasaria, H. B. Schimmerling, W. Wong, M. Howard, J. 20Ne Depth-Dose Relations in Water Health Phys. 46 no. 5 May 1984 1101 1111
- Ziegler, J. F. Helium Stopping Powers and Ranges in All Elemental Matter Volume 4 of The Stopping and Ranges of Ions in Matter Ziegler, J. F. Pergamon Press Inc. 1977
- Barkas, W. H. Nuclear Research Emulsions Volume 1-Techniques and Theory Academic Press 1973
- Wilson, J. W. Analysis of the Theory of High-Energy Ion Transport NASA 1977
- Wilson, J. W. Townsend, L.W. Schimmerling, W. Khandelwal, G. S. Khan, F. Nealy, J. E. Cucinotta, F. A. Simonsen, L. C. Shinn, J. L. Norbury, J. W. Transport Methods and Interactions for Space Radiations NASA 1991