Gamow-Teller strength for the analog transitions to the first T=1/2,Jπ=3/2- states in C13 and N13 and the implications for type Ia supernovae

R. G.T. Zegers, E. F. Brown, H. Akimune, Sam M. Austin, A. M. Van Den Berg, B. A. Brown, D. A. Chamulak, Y. Fujita, M. Fujiwara, S. Galès, M. N. Harakeh, H. Hashimoto, R. Hayami, G. W. Hitt, M. Itoh, T. Kawabata, K. Kawase, M. Kinoshita, K. Nakanishi, S. NakayamaS. Okumura, Y. Shimbara, M. Uchida, H. Ueno, T. Yamagata, M. Yosoi

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19 Citations (Scopus)

Abstract

The Gamow-Teller strength for the transition from the ground state of C13 to the T=1/2,Jπ=3/2- excited state at 3.51 MeV in N13 is extracted via the C13(He3,t) reaction at 420 MeV. In contrast to results from earlier (p,n) studies on C13, a good agreement with shell-model calculations and the empirical unit cross-section systematics from other nuclei is found. The results are used to study the analog N13(e-,νe)C13 reaction, which plays a role in the pre-explosion convective phase of type Ia supernovae. Although the differences between the results from the (He3,t) and (p,n) data significantly affect the deduced electron-capture rate and the net heat deposition in the star resulting from this transition, the overall effect on the pre-explosive evolution is small.

Original languageEnglish
Article number024307
JournalPhysical Review C - Nuclear Physics
Volume77
Issue number2
DOIs
Publication statusPublished - 2008 Feb 21

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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