Gamow-Teller transition strengths in the intermediate nucleus of the 116Cd double-β decay by the 116Cd(p,n)116In and 116Sn(n,p)116In reactions at 300 MeV

M. Sasano, H. Sakai, K. Yako, Tomotsugu Wakasa, M. Dozono, V. Rodin, A. Faessler, Kunihiro Fujita, M. B. Greenfield, K. Hatanaka, K. Itoh, T. Kawabata, H. Kuboki, Y. Maeda, K. Miki, K. Muto, S. Noji, H. Okamura, Y. Sakemi, K. SekiguchiY. Shimizu, Y. Sasamoto, Y. Tameshige, A. Tamii, T. Uesaka

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Abstract

The double-differential cross sections for the 116Cd(p,n) and 116Sn(n,p) reactions were measured at 300 MeV for studying the nuclear matrix element of the 116Cd ββ decay. A multipole decomposition technique was applied to the spectra to extract the Gamow-Teller (GT) component. The integrated GT strengths up to an excitation energy of 30 MeV in the intermediate nucleus 116In are 40±6 and 11±1 in the (p,n) and (n,p) spectra, respectively, including the component from the isovector spin monopole (IVSM). The spectra are compared with those obtained from a theoretical calculation with a quasiparticle random phase approximation, where the contribution from the IVSM component as well as the interference effect between the GT and IVSM components are fully taken into account.

Original languageEnglish
Article number061301
JournalPhysical Review C - Nuclear Physics
Volume85
Issue number6
DOIs
Publication statusPublished - Jun 6 2012

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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