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arXiv · 1404.6016

Approximation of reduced width amplitude and application to cluster decay width

Yoshiko Kanada-En'yo·Tadahiro Suhara·Yasutaka Taniguchi
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Abstract

We propose a simple method to approximately evaluate reduced width amplitude (RWA) of a two-body spinless cluster channel using the norm overlap with the Brink-Bloch cluster wave function at the channel radius. The applicability of the present approximation is tested for the $^{16}$O+$\alpha$ channel in $^{20}$Ne as well as the $\alpha$+$\alpha$ channel in $^8$Be. The approximation is found to be reasonable to evaluate the RWA for states near the threshold energy and it is useful to estimate the $\alpha$-decay width of resonance states. The approximation is also applied to $^9$Li, and the partial decay width of the $^6$He($0^+_1$)+$t$ channel is discussed.

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Yoshiko Kanada-En'yo, Tadahiro Suhara, Yasutaka Taniguchi. 2014-04-24. Approximation of reduced width amplitude and application to cluster decay width. https://doi.org/10.1093/ptep/ptu095

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