Stellar Synthesis of the Proton-Rich Heavy Elements

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概要

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• The proton-rich heavy nuclei are produced by proton-capture and/or photo-nuclear reactions starting with the products of neutron capture. The stellar conditions in which the proton-rich nuclei are produced must be such that the proton density ρ_p=10〜10^2gcm^-3, the neutron density ρ_n=10^-5〜10^-4gcm^-3 and the other matter density ρ&Isim;10^-5gcm^-3 at the temperature T=2.5〜3×10^9°K. It is, however, difficult to explain the abundance of all proton-rich nuclei for the equal temperature. It is possible if there exist the regions of different temperature. To form these nuclei the nuclear formation by the effective (p, γ) reaction occurs in the higher temperature region and the nuclear formation by the effective (γ, n) reaction in the lower temperature region.

• 理論物理学刊行会の論文
• 1961-12-25

著者

• Ito Kensai

  Department Of Physics Rikkyo University

• ITO Kensai

  Department of Physics, Rikkyo University

関連論文

• Observations of Ultraheavy Cosmic Ray Particles with Z>45 at 10 GV Geomagnetic Cutoff Rigidity
• Isotopic Abundance of Carbon in Primary Cosmic Rays
• Positive Temperature Effect of Cosmic Rays
• Very High Energy Nuclear Reactions and Alpha-Particle Model
• Part III Composition of Primary Cosmic Rays
• On Fissionability of Heavy Nuclei
• Stellar Synthesis of the Proton-Rich Heavy Elements

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