TY - GEN
T1 - High-resolution study of 56Fe → 56Mn Gamow-Teller transition by the combined analysis of 56Fe( 3He,t)56Co and 56Fe(p,p′)56Fe reactions
AU - Nagashima, M.
AU - Shimbara, Y.
AU - Fujita, H.
AU - Fujita, Y.
AU - Adachi, T.
AU - Botha, N. T.
AU - Ganioǧlu, E.
AU - Hatanaka, K.
AU - Hirota, K.
AU - Khai, N. T.
AU - Matsubara, H.
AU - Nakanishi, K.
AU - Neveling, R.
AU - Okamura, H.
AU - Ong, H. J.
AU - Sakemi, Y.
AU - Shimizu, Y.
AU - Susoy, G.
AU - Suzuki, T.
AU - Tamii, A.
AU - Thies, J.
AU - Yosoi, M.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
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U2 - 10.1063/1.3485189
DO - 10.1063/1.3485189
M3 - Conference contribution
AN - SCOPUS:77956641079
SN - 9780735408197
T3 - AIP Conference Proceedings
SP - 427
EP - 429
BT - 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
T2 - 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
Y2 - 8 March 2010 through 10 March 2010
ER -