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arXiv · 0812.2538

$α$-Particle Spectrum in the Reaction p+$^{11}$B$\to α+ ^8Be^*\to 3α$

V. F. Dmitriev
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Abstract

Using a simple phenomenological parametrization of the reaction amplitude we calculated $α$-particle spectrum in the reaction p+$^{11}$B$\to α+ ^8Be^*\to 3α$ at the resonance proton energy 675 KeV. The parametrization includes Breit-Wigner factor with an energy dependent width for intermediate $^8Be^*$ state and the Coulomb and the centrifugal factors in $α$-particle emission vertexes. The shape of the spectrum consists of a well defined peak corresponding to emission of the primary $α$ and a flat shoulder going down to very low energy. We found that below 1.5 MeV there are 17.5% of $α$'s and below 1 MeV there are 11% of them.

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V. F. Dmitriev. 2008-12-13. $α$-Particle Spectrum in the Reaction p+$^{11}$B$\to α+ ^8Be^*\to 3α$. https://doi.org/10.1134/s1063778809070084

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