TY - JOUR
T1 - Mirror asymmetry investigated by β decay of proton-rich 24Si
AU - Ichikawa, Yuichi
N1 - Funding Information:
The experiment was carried out at RIKEN Accelerator Research Facility operated by RIKEN Nishina Center and CNS, University of Tokyo. This work is supported by Grant-in-Aid for Scientific Research No. 15204017 in Japan, NSF grant PHY-0758099 in USA and the Japan-US Theory Institute for Physics with Exotic Nuclei (JUSTIPEN). Y.I. acknowledges Special Postdoctoral Researchers Program in RIKEN.
PY - 2010/7/30
Y1 - 2010/7/30
N2 - The β-decay spectroscopy on 24Si was carried out in order to investigate characteristic properties of proton-rich nuclei from a perspective of mirror asymmetry. We observed two β transitions to low-lying bound states in 24Al for the first time. The B(GT) of 24Si were deduced to be 0.13(2) and 0.14(2), which were smaller than those of the mirror transition by 22(11)% and 10(8)%, respectively. Through the comparison with theoretical calculations taking into account the Coulomb force and the Thomas-Ehrman shift, the mirror asymmetry of B(GT) is attributed to the lowering of the proton 1s1/2 orbital.
AB - The β-decay spectroscopy on 24Si was carried out in order to investigate characteristic properties of proton-rich nuclei from a perspective of mirror asymmetry. We observed two β transitions to low-lying bound states in 24Al for the first time. The B(GT) of 24Si were deduced to be 0.13(2) and 0.14(2), which were smaller than those of the mirror transition by 22(11)% and 10(8)%, respectively. Through the comparison with theoretical calculations taking into account the Coulomb force and the Thomas-Ehrman shift, the mirror asymmetry of B(GT) is attributed to the lowering of the proton 1s1/2 orbital.
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U2 - 10.1142/S0217732310000587
DO - 10.1142/S0217732310000587
M3 - Article
AN - SCOPUS:77954820118
SN - 0217-7323
VL - 25
SP - 1895
EP - 1898
JO - Modern Physics Letters A
JF - Modern Physics Letters A
IS - 21-23
ER -