Stellar Synthesis of the ?-Particle Nuclei Heavier than Ne 20

Publisher Website
Google Scholar
Abstract
The rate of (α, γ) and (γ, α) reactions at temperature above 5×108°K for α-particle nuclei, Ne20, Mg24, Si28, S32, A36, and Ca40, are calculated as well as heavy ion reactions such as C12+C12→Ne20+α, etc. The stellar condition, under which the cosmical abundances of the α-particle nuclei can be explained in terms of the above nuclear reactions, is investigated by using these results. At high temperature T = 2~3×109 °K the cosmical abundances of α-particle nuclei can be reproduced by taking the matter density ρ as 1~102 g cm-3. Such a stellar condition may be realized in the supernova explosion. It is shown that, to explain the cosmical abundances in concern by the equilibrium theory, T > 5×109 °K and ρ~105g cm-3 are required.

This publication has 0 references indexed in Scilit: