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Record Details

Record 38 of 28010
Light ion components of the galactic cosmic rays: Nuclear interactions and transport theory
External Online Source: doi:10.1016/0273-1177(95)00515-G
Author and Affiliation:
Cucinotta, F. A.(NASA Langley Research Center, Hampton, VA, US, United States)
Townsend, L. W.(NASA Langley Research Center, Hampton, VA, US, United States)
Wilson, J. W.(NASA Langley Research Center, Hampton, VA, US, United States)
Shinn, J. L.(NASA Langley Research Center, Hampton, VA, US, United States)
Badhwar, G. D.(NASA Johnson Space Center, Houston, TX, US, United States)
Dubey, R. R.(Old Dominion Univ., Norfolk, VA, US, United States)
Abstract: Light nuclei are present in the primary galactic cosmic rays (GCR) and are produced in thick targets due to projectile or target fragmentation from both nucleon and heavy induced reactions. In the primary GCR, He-4 is the most abundant nucleus after H-1. However, there are also a substantial fluxes of H-2 and He-3. In this paper we describe theoretical models based on quantum multiple scattering theory for the description of light ion nuclear interactions. The energy dependence of the light ion fragmentation cross section is considered with comparisons of inclusive yields and secondary momentum distributions to experiments described. We also analyze the importance of a fast component of lights ions from proton and neutron induced target fragementation. These theoretical models have been incorporated into the cosmic ray transport code HZETRN and will be used to analyze the role of shielding materials in modulating the production and the energy spectrum of light ions.
Publication Date: Jan 01, 1996
Document ID:
19950057274
(Acquired Dec 28, 1995)
Accession Number: 95A88873
Subject Category: SPACE RADIATION
Document Type: Journal Article
Publication Information: SEE A95-88864; Advances in Space Research; p. p. (2)77-(2)86; (ISSN 0273-1177); 17; 2
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
NASA Johnson Space Center; Houston, TX, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENERGY SPECTRA; FRAGMENTATION; GALACTIC COSMIC RAYS; LIGHT IONS; NUCLEAR INTERACTIONS; NUCLEAR SCATTERING; RADIATION SHIELDING; RADIATION TRANSPORT; HELIUM IONS; HYDROGEN IONS; MOMENTUM; NEUTRONS; PENETRATION; PROTONS; QUANTUM MECHANICS
Imprint And Other Notes: Near-earth radiation environment including time variations and secondary radiation; Meetings F2.6 and F2.7, COSPAR Scientific Assembly, 30th, Hamburg, Germany, July 11-21, 1994 . A95-88864, p. (2)77-(2)86
Availability Source: Other Sources
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