Stellar Synthesis of the α-Particle Nuclei Heavier than Ne20

Details Stellar Synthesis of the α-Particle Nuclei Heavier than Ne20 Stellar Synthesis of the α-Particle Nuclei Heavier than Ne20

Jul 1959

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1959pthph..22..101h&link_type=abstract

Progress of Theoretical Physics, Vol. 22, No. 1, pp. 101-127

Physics

13

Scientific paper

The rate of (α , γ) and (γ , α) reactions at temperature above 5 × {10^8}°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 × {10^9}°K the cosmical abundances of α-particle nuclei can be reproduced by taking the matter density ρ as 1 ˜ 10^2 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 × {10^9}°K and ρ ˜ 10^5g cm-3 are required.

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