High-resolution study of 56Fe → 56Mn Gamow-Teller transition by the combined analysis of 56Fe( 3He,t)56Co and 56Fe(p,p′)56Fe reactions

M. Nagashima, Y. Shimbara, H. Fujita, Y. Fujita, T. Adachi, N. T. Botha, E. Ganioǧlu, K. Hatanaka, K. Hirota, N. T. Khai, H. Matsubara, K. Nakanishi, R. Neveling, H. Okamura, H. J. Ong, Y. Sakemi, Y. Shimizu, G. Susoy, T. Suzuki, A. TamiiJ. Thies, M. Yosoi

研究成果: Conference contribution

抄録

The Gamow-Teller (GT) transitions in the β+ (electron capture) direction from the ground state of 56Fe to the excited states of 56Mn play an important role in the core collapse of presupernova. Assuming that isospin analogous transitions in isobars have corresponding strengths, we deduced these GT strengths by combining the results of the 56Fe(p; p′)56Fe experiment per- formed at 200 MeV and 0° and the 56Fe(3He,t)56Co experiment in the β - direction at 140 MeV/u and 0°. The ground state of 56Fe has the isospin value of T = 2, while the GT states in 56Mn have T = 3. In order to identify the analogous T = 2 → 3, GT transitions in the 56Fe(p; p′)56Fe and the 56Fe(3He,t)56Co measurements, we used the fact that the isospin Clebsch-Gordan (CG) coefficients for these T = 2→3 transitions are different in these measurements. Then the GT transition strengths B(GT) in theβ+direction can be deduced from the B(GT) values of the corresponding transitions well determined in the 56Fe(3He,t)56Co measurement assuming the isospin symmetry and correcting the difference of CG coefficients.

本文言語English
ホスト出版物のタイトル10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
ページ427-429
ページ数3
DOI
出版ステータスPublished - 2010
外部発表はい
イベント10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 - Osaka, Japan
継続期間: 08-03-201010-03-2010

出版物シリーズ

名前AIP Conference Proceedings
1269
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

Conference10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
国/地域Japan
CityOsaka
Period08-03-1010-03-10

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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