DSpace at EWHA: Study of spin-isospin responses of radioactive nuclei with the background-reduced neutron spectrometer, PANDORA

View : 742 Download: 0

Study of spin-isospin responses of radioactive nuclei with the background-reduced neutron spectrometer, PANDORA

Title: Study of spin-isospin responses of radioactive nuclei with the background-reduced neutron spectrometer, PANDORA

Authors: Stuhl, L.; Sasano, M.; Gao, J.; Hirai, Y.; Yako, K.; Wakasa, T.; Ahn, D. S.; Baba, H.; Chilug, A. I.; Franchoo, S.; Fujino, Y.; Fukuda, N.; Gibelin, J.; Hahn, I. S.; Halasz, Z.; Harada, T.; Harakeh, M. N.; Inomoto, D.; Isobe, T.; Kasahara, H.; Kim, D.; Kiss, G. G.; Kobayashi, T.; Kondo, Y.; Korkulu, Z.; Koyama, S.; Kubota, Y.; Kurihara, A.; Liu, H. N.; Matsumoto, M.; Michimasa, S.; Miki, H.; Miwa, M.; Motobayashi, T.; Nakamura, T.; Nishimura, M.; Otsu, H.; Panin, V.; Park, S.; Saito, A. T.; Sakai, H.; Sato, H.; Shimada, T.; Shimizu, Y.; Shimoura, S.; Spiridon, A.; Stefanescu, I. C.; Sun, X.; Sun, Y. L.; Suzuki, H.; Takada, E.; Togano, Y.; Tomai, T.; Trache, L.; Tudor, D.; Uesaka, T.; Yamada, H.; Yang, Z.; Yasuda, M.; Yoneda, K.; Yoshida, K.; Zenihiro, J.; Zhang, N.

Journal Title: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS vol. 463, pp. 189 - 194

Keywords: Spin-isospin response; Gamow-Teller transition; Inverse-kinematics (p, n) reactions; Low-energy neutron detector; Real-time pulse-shape discrimination; Figure-of-Merit (RIM)

Abstract: The status of a project to measure spin-isospin responses of neutron drip-line nuclei using a new low-energy neutron detector, PANDORA (Particle Analyzer Neutron Detector Of Real-time Acquisition), is reported. The performance of PANDORA was characterized by the He-6(p, n)Li-6 reaction in inverse kinematics at the HIMAC facility in Chiba. Observation of the strong transition to the ground state in Li-6 is discussed. Preliminary results of Li-11(p, n)Be-11 and Be-14(p, n)B-14 experiments in inverse kinematics at RI Beam Factory (RIBF) of RIKEN Nishina Center are also presented including the exotic decay channel of Be-11 -> Li-9 + d. Details of the experimental setup based on PANDORA and the SAMURAI large-acceptance magnetic spectrometer, as well as the combined data-acquisition system are described. The neutron-gamma discrimination capability of PANDORA was evaluated, Figure-of-Merit (FoM) values higher than those found in the literature for similar materials were derived from experimental data.