TY - GEN
T1 - Gamow-Teller Transitions and beta-decay Half-life in Proton Rich pf-shell Nuclei
AU - Y, Fujita
AU - T, Adachi
AU - B, Blank
AU - P, von Brentano
AU - GPA, Berg
AU - H, Fujita
AU - K, Fujita
AU - K, Hatanaka
AU - K, Nakanishi
AU - A, Negret
AU - Popescu, Lucia
AU - B, Rubio
AU - Y, Shimbara
AU - Y, Shimizu
AU - Y, Tameshinge
AU - A, Tamii
AU - M, Yosoi
AU - K.O., Zell
A2 - Pauwels, Dieter
PY - 2010/6
Y1 - 2010/6
N2 - In violent neutrino-induced reactions at the core-collapse stage of type II supernovae, Gamow-Teller (GT) transitions starting from stable as well as unstable pf-shell nuclei play important roles. In the beta-decay study of these unstable pf-shell nuclei, half-lives can be measured rather accurately. On the other hand, in high-resolution (3He,t) charge-exchange reactions at 0 degrees, individual GT transitions up to high excitations can be studied. Assuming the isospin symmetry for the strengths of Tz, = +/- 2 -> +/- 1 analogous GT transitions, we present a "merged analysis" for the determination of GT transition strengths starting from proton-rich Tz = -2 nuclei. We applied this analysis to the A = 52, T = 2 system, and it was found that the GT transitions and the properties of the 52Ni beta decay can be understood better by combining the mirror GT strength distribution obtained from the 52Cr(3He,t) reaction.
AB - In violent neutrino-induced reactions at the core-collapse stage of type II supernovae, Gamow-Teller (GT) transitions starting from stable as well as unstable pf-shell nuclei play important roles. In the beta-decay study of these unstable pf-shell nuclei, half-lives can be measured rather accurately. On the other hand, in high-resolution (3He,t) charge-exchange reactions at 0 degrees, individual GT transitions up to high excitations can be studied. Assuming the isospin symmetry for the strengths of Tz, = +/- 2 -> +/- 1 analogous GT transitions, we present a "merged analysis" for the determination of GT transition strengths starting from proton-rich Tz = -2 nuclei. We applied this analysis to the A = 52, T = 2 system, and it was found that the GT transitions and the properties of the 52Ni beta decay can be understood better by combining the mirror GT strength distribution obtained from the 52Cr(3He,t) reaction.
KW - nuclear physics
KW - isospin symmetry
KW - charge-exchange reactions
KW - beta decay
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_116120
UR - http://knowledgecentre.sckcen.be/so2/bibref/8348
M3 - In-proceedings paper
SN - 978-0-7354-0784-8
VL - 1
T3 - AIP Conference Proceedings
SP - 297
EP - 300
BT - Tours Symposium on Nuclear Physics and Astrophysics - VII
CY - Melville, New York, United States
T2 - Tours Symposium on Nuclear Physics and Astrophysics - VII
Y2 - 16 November 2009 through 20 November 2009
ER -