Neutron lifetime measurement with pulsed cold neutrons

K. Hirota, G. Ichikawa, S. Ieki, T. Ino, Y. Iwashita, M. Kitaguchi, R. Kitahara, J. Koga, K. Mishima, T. Mogi, K. Morikawa, A. Morishita, N. Nagakura, H. Oide, H. Okabe, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. M. ShimizuN. Sumi, H. Sumino, T. Tomita, H. Uehara, T. Yamada, S. Yamashita, K. Yano, M. Yokohashi, T. Yoshioka

研究成果: ジャーナルへの寄稿学術誌査読

8 被引用数 (Scopus)


The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

ジャーナルProgress of Theoretical and Experimental Physics
出版ステータス出版済み - 12月 1 2020

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)


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