Tables of Nuclear Cross Sections for Galactic Cosmic Rays
Tables of Nuclear Cross Sections for Galactic Cosmic Rays

Author: Lawrence W. Townsend

Publisher:

Published: 1985

Total Pages: 40

ISBN-13:

DOWNLOAD EBOOK

A simple but comprehensive theory of nuclear reactions is presented. Extensive tables of nucleon, deuteron, and heavy-ion absorption cross sections over a broad range of energies are generated for use in cosmic ray shielding studies. Numerous comparisons of the calculated values with available experimental data show agreement to within 3 percent for energies above 80 MeV/nucleon and within approximately 10 percent for energies as low as 30 MeV/nucleon. These tables represent the culmination of the development of the absorption cross section formalism and supersede the preliminary absorption cross sections published previously in NASA TN D-8107, NASA TP-2138, and NASA TM-84636.

Proton-Nucleus Total Cross Sections in Coupled-Channel Approach
Proton-Nucleus Total Cross Sections in Coupled-Channel Approach

Author: R. K. Tripathi

Publisher:

Published: 2000

Total Pages: 18

ISBN-13:

DOWNLOAD EBOOK

Recently, nucleon-nucleon (N-N) cross sections in the medium have been extracted directly from experiment. The in-medium N-N cross sections form the basic ingredients of several heavy-ion scattering approaches including the coupled-channel approach developed at the Langley Research Center. In the present study the ratio of the real to the imaginary part of the two-body scattering amplitude in the medium was investigated. These ratios are used in combination with the in-medium N-N cross sections to calculate total proton-nucleus cross sections. The agreement is excellent with the available experimental data. These cross sections are needed for the radiation risk assessment of space missions.