A new technique to determine gamma emission probability above the neutron threshold without gamma-ray detectors

A new technique to determine gamma emission probability above the neutron threshold without gamma-ray detectors

We have developed a new experimental technique to determine the gamma emission probability from unbound states populated by the (d, p) reaction at 20 MeV/nucleon under the inverse kinematics. This was achieved using the decelerating and focusing device OEDO at RIBF. Due to the inverse kinematics, th...

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Main Authors: Imai Nobu, Dozono Masanori, Michimasa Shin’ichiro, Sumikama Toshiyuki, Ota Shinsuke, Hayakawa Seiya, Hwang Jongwon, Iribe Kotaro, Iwamoto Chihiro, Kawase Shoichiro, Kawata Keita, Kitamura Noritaka, Masuoka Shoichiro, Nakano Keita, Schrock Philipp, Suzuki Daisuke, Tsunoda Rieko, Wimmer Kathrin, Ahn Deuk Soon, Beliuskina Olga, Chiga Nobuyuki, Fukuda Naoki, Ideguchi Eiji, Kusaka Kensuke, Miki Hareru, Miyatake Hiroari, Nagae Daisuke, Omika Shoichiro, Ohtake Masao, Ong Hooi Jin, Otsu Hideaki, Sakurai Hiroyoshi, Shimizu Hideki, Shimizu Yohei, Sun Xiaofui, Suzuki Hiroshi, Takaki Motonobu, Takeda Hiroyuki, Takeuchi Satoshi, Teranishi Takashi, Watanabe Yukinobu, Watanabe Yutaka X., Yako Kentaro, Yamada Hiroki, Yamaguchi Hidetoshi, Yang Lei, Yanagihara Rikuto, Yoshida Koichi, Shimoura Susumu
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2025/14/epjconf_cgs17_03002.pdf
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Summary:We have developed a new experimental technique to determine the gamma emission probability from unbound states populated by the (d, p) reaction at 20 MeV/nucleon under the inverse kinematics. This was achieved using the decelerating and focusing device OEDO at RIBF. Due to the inverse kinematics, the outgoing reaction residues can be identified by a magnetic spectrometer. By combining the missing spectroscopy with the identification of the residual ions, the γ emission channel was determined event-by-event as a function of the excitation energy, without detecting γ ray from the unbound states. As the first application, the method was used to study the neutron capture reaction on 79Se via the (d, p) reaction as a surrogate reaction for the neutron energies up to 5 MeV. Additionally, the technique was employed to investigate the compound reaction channel of (n, γ) cross sections on 130Sn.
ISSN:2100-014X

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