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arXiv · 1407.6522

Astrophysical reaction rate for $^9$Be formation within a three-body approach

J. Casal·M. Rodríguez-Gallardo·J. M. Arias·I. J. Thompson
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Abstract

The structure of the Borromean nucleus $^9$Be ($α+α+n$) is addressed within a three-body approach using the analytical transformed harmonic oscillator method. The three-body formalism provides an accurate description of the radiative capture reaction rate for the entire temperature range relevant in Astrophysics. At high temperatures, results match the calculations based on two-step sequential processes. At low temperatures, where the particles have no access to intermediate two-body resonances, the three-body direct capture leads to reaction rates larger than the sequential processes. These results support the reliability of the method for systems with several charged particles.

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J. Casal, M. Rodríguez-Gallardo, J. M. Arias, I. J. Thompson. 2014-09-19. Astrophysical reaction rate for $^9$Be formation within a three-body approach. https://doi.org/10.1103/physrevc.90.044304

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