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arXiv · 2203.13822

p-process chaser detector in $n$-$\gamma$ coincidences

H. Utsunomiya·Z. R. Hao·S. Goriely·X. G. Cao·G. T. Fan·H. W. Wang
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Abstract

We propose two types of neutron-$\gamma_1$-$\gamma_2$ triple coincidence detectors (not constructed) to chase gamma transitions to produce p-nuclei following the neutron emission in the $(\gamma, n)$ reaction. Neutrons are detected with 24 $^3$He counters embedded in a polyethylene moderator in Type I detector and with 6 liquid scintillation detectors in Type II detector, respectively. $\gamma$ rays are detected with two high-purity germanium detectors and four LaBr$_3$(Ce) detectors. The detector which is referred to as p-process chaser detector is used to search for mediating states in $^{180}$Ta through which the isomeric and ground states in $^{180}$Ta are thermalized in the p-process. A search is made for both resonant states and unresolved states in high nuclear-level-density domain.

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H. Utsunomiya, Z. R. Hao, S. Goriely, X. G. Cao, G. T. Fan, H. W. Wang. 2022-03-25. p-process chaser detector in $n$-$\gamma$ coincidences. https://doi.org/10.1016/j.nima.2022.166819

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