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arXiv · 1011.0550

The triple alpha reaction rate and the 2$^+$ resonances in $^{12}$C

R. de Diego·E. Garrido·D. V. Fedorov·A. S. Jensen
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Abstract

The triple alpha rate is obtained from the three-body bound and continuum states computed in a large box. The results from this genuine full three-body calculation are compared with standard reference rates obtained by two sequential two-body processes. The fairly good agreement relies on two different assumptions about the lowest $2^+$ resonance energy. With the same $2^+$ energy the rates from the full three-body calculation are smaller than those of the standard reference. We discuss the rate dependence on the experimentally unknown $2^+$ energy. Substantial deviations from previous results appear for temperatures above 3 GK.

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R. de Diego, E. Garrido, D. V. Fedorov, A. S. Jensen. 2010-11-02. The triple alpha reaction rate and the 2$^+$ resonances in $^{12}$C. https://doi.org/10.1016/j.physletb.2010.11.001

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