Utsunomiya, H.; Hao, Z. R.; Goriely, S.; Cao, X. G.; Fan, G. T.; Wang, H. W.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

2022, 1034, 0168-9002

Utsunomiya, H.; Hao, Z. R.; Goriely, S.; Cao, X. G.; Fan, G. T.; Wang, H. W.

We propose two types of neutron-y(1) - y(2) triple coincidence detectors (not constructed) to chase gamma transitions to produce p-nuclei following the neutron emission in the (y, n) reaction. Neutrons are detected with 24 3He counters embedded in a polyethylene moderator in Type I detector and with 6 liquid scintillation detectors in Type II detector, respectively. y rays are detected with two high-purity germanium detectors and four LaBr3(Ce) detectors. The detector which is referred to as p-process chaser detector is used to search for mediating states in 180Ta through which the isomeric and ground states in Ta-180 are thermalized in the p-process. A search is made for both resonant states and unresolved states in high nuclear-level-density domain.