Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apjs...35..129s&link_type=abstract
Astrophysical Journal Supplement Series, vol. 35, Oct. 1977, p. 129-136.
Astronomy and Astrophysics
Astrophysics
22
Astrophysics, Neutron Emission, Nuclear Reactions, Proton Irradiation, Charge Exchange, Cross Sections, Energy Distribution, Monte Carlo Method, Solar Flares, Standard Deviation
Scientific paper
Nuclear reactions in which the incident proton is absorbed or undergoes charge exchange and x neutrons are emitted are called (p, xn) reactions. The basic features of the experimental (p, xn) cross sections are discussed, taking into account the dependence on energy and on the neutron-to-proton ratio of the target nuclei. A semiempirical equation is presented and a comparison is conducted of calculated and experimental cross-section values. Data obtained in semiempirical calculations are compared with the results obtained in computations based on Monte Carlo techniques. It is found that the predictions of the semiempirical equations are as accurate as those of the Monte Carlo calculations. However, the semiempirical calculations are much faster and apply at high energies as well.
Silberberg Rein
Tsao C. H.
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