r-Process Nucleosynthesis of C^<12> Seed Nucleus

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概要

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• The produced amount of nuclides by r-process nucleosynthesis is calculated under the condition of high temperature and high density. In this case the seed nucleus of this process is mainly C^<12>, which is pumping-out from the equilibrium system, and absorbs enough free neutrons to succeed the rapid-neutron-capture process. The existence of these free neutrons is due to neutronization by the weak interaction at the time of quasi-stational, hydrodynamic contraction of later stage stars, i. e. presupernovae, and therefore one of the possible astronomical sites of this process is the inner shell of type-I supernovae. The r-process of C^<12> seed nucleus can explain the abundance of neutron rich nuclei in the mass region of 30IsimAIsim250 except the region of 50IsimAIsim65. The nuclei belonging to the latter region may be produced by another type of r-process, which may occur under the condition of rather low temperature and low density, and whose seed uclei may by Fe- group nuclei.

• 理論物理学刊行会の論文
• 1970-06-25

著者

• OHNISHI Teruaki

  Engineering Research Institute Kyoto University

関連論文

• Smoothing Mechanism of the Odd-Even Structure of Elemental Abundance Curve
• r-Process Nucleosynthesis of C^ Seed Nucleus

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