Formation of Li, Be, B in the Expanding Hot Universe
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概要
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The hot universe model suggests the element formation by thermonuclear fusion at the early stage of the cosmic expansion. The primordial origin of Li, Be, B is examined. Recent investigation by Wagoner, Fowler and Hoyle gives only the abundance of Li^7. In this paper, we estimate the abundances of all the stable isotopes of Li, Be and B produced. In the case of Friedmann models with the present matter density p_<0m>=10^<-32>~10^<-29> g/cm^3 and the present radiation temperature T_0≃3゜K, the produced quantities are D<10^<-2.0>, He^3<10^<-3.6>, He^4<10^<-1.0>, Li^6<10^<-12.7>, Li^7<10^<-8.6>, Be^9<10^<-13.3>, B^10<10^<-16.7> and B^11<10^<-13.0>, by the ratio to hydrogen in number density. Therefore, the observed abundances of Li, Be, B cannot be explained by the primordial origin.
- 理論物理学刊行会の論文
- 1967-11-25
著者
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Sato Humitaka
Department Of Nuclear Science Kyoto University
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SATO Humitaka
Department of Physics, Faculty of Science, Kyoto University
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