Theoretical Studies of the 7Li(3H,n)9Be Cross Section and Primordial Nucleosynthesis of 9Be (低および中高エネルギ-重イオン核反応機構)
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概要
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The direct reaction cross section for ^7Li(^3H, n)^9Be at low energies 0 MeV ≦ E_<cm> ≦ 2 MeV of astrophysical interest was calculated in the nuclear models of distorted- wave Born approximation. Nuclear potentials and spectroscopic amplitudes were determined from the observed cross section for ^7Li(^3He, p)^9Be, assuming charge independence of these quantities. We predict the total reaction cross section for ^7Li(^3H, n)^9Be by taking account of the difference of Coulomb interaction and the contribution from compound resonance formation. They were applied to primordial nucleosynthesis calculations and it was confirmed that the nuclear reaction ^7Li(^3H, n)^9Be can extremely enhance the ^9Be abundance in inhomogeneous models for primordial nucleosynthesis as predicted in recent theoretical studies.
- 素粒子論グループ 素粒子研究編集部の論文
- 1991-08-20
著者
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山本 雄一
都立大 理
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山本 雄一
都立大理
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Kajino Toshitaka
Department of Physics Tokyo Metropolitan University
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Kubo Ken-ichi
Department of Physics Tokyo metropolitan University
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Kubo Ken-ichi
Department Of Physics School Of Science Tohyo Metropolitan University
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