Measurement of the neutron capture rate of the (C-12)(n,gamma)(C-13) reaction at stellar energy
Measurement of the neutron capture rate of the (C-12)(n,gamma)(C-13) reaction at stellar energy
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恒星能量下 (C-12)(n,gamma)(C-13) 反应的中子捕获率测量
DOI：
10.1086/170010
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
T. Fukuda
中科院分区：
文献类型：
--
作者：
Y. Nagai;M. Igashira;K. Takeda;N. Mukai;S. Motoyama;F. Uesawa;H. Kitazawa;T. Fukuda
恒星能量下的(C-12)(u,gamma)(C-13)反应在非均匀大爆炸模型中的中等质量核的核合成以及恒星演化过程中的重元素的核合成中发挥着重要作用。在本研究中，通过检测从捕获态发射的伽马射线来测量反应速率；获得16.8+或{负}2.1微仓，比热中子俘获截面估计值大约5倍。目前的结果有利于非均匀大爆炸模型中中等质量核的核合成，也有利于爆炸超新星中重元素的核合成。 19 参考文献
The reaction (C-12)(u,gamma)(C-13) at stellar energy plays important roles in the nucleosynthesis of intermediate-mass nuclei in inhomogeneous big bang models and in that of heavy elements during stellar evolution. In the present study, the reaction rate was measured by detecting gamma-rays emitted from a captured state; 16.8 + or {minus} 2.1 microbarn was obtained, about 5 times larger than the estimated value from the thermal-neutron capture cross section. The present result favors the nucleosynthesis of intermediate-mass nuclei in inhomogeneous big bang models and also of heavy elements in exploding supernovae. 19 refs.