Clustering in $^{18}$O -- absolute determination of branching ratios via high-resolution particle spectroscopy

S. Pirrie; C. Wheldon; Tz. Kokalova; J. Bishop; R. Hertenberger; H. -F. Wirth; S. Bailey; N. Curtis; D. Dell'Aquila; Th. Faestermann; D. Mengoni; R. Smith; D. Torresi; A. Turner

arXiv · 1912.00300

Clustering in $^{18}$O -- absolute determination of branching ratios via high-resolution particle spectroscopy

S. Pirrie·C. Wheldon·Tz. Kokalova·J. Bishop·R. Hertenberger·H. -F. Wirth·S. Bailey·N. Curtis·D. Dell'Aquila·Th. Faestermann·D. Mengoni·R. Smith·D. Torresi·A. Turner

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Abstract

The determination of absolute branching ratios for high-energy states in light nuclei is an important and useful tool for probing the underlying nuclear structure of individual resonances: for example, in establishing the tendency of an excited state towards $\alpha$-cluster structure. Difficulty arises in measuring these branching ratios due to similarities in available decay channels, such as ($\mathbf{^{18}}$O,$\mathbf{n}$) and ($\mathbf{^{18}}$O,$\mathbf{2n}$), as well as differences in geometric efficiencies due to population of bound excited levels in daughter nuclei. Methods are presented using Monte Carlo techniques to overcome these issues.

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S. Pirrie, C. Wheldon, Tz. Kokalova, J. Bishop, R. Hertenberger, H. -F. Wirth, S. Bailey, N. Curtis, D. Dell'Aquila, Th. Faestermann, D. Mengoni, R. Smith, D. Torresi, A. Turner. 2019-12-01. Clustering in $^{18}$O -- absolute determination of branching ratios via high-resolution particle spectroscopy. https://arxiv.org/abs/1912.00300

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