TY - JOUR
T1 - Isospin mixing in the isobaric analog state derived from the (p, nIASp˜) reaction on 140Ce, 172,174,176Yb, and 208Pb
AU - Orihara, H.
AU - Yun, C. C.
AU - Terakawa, A.
AU - Itoh, K.
AU - Yamamoto, A.
AU - Kawami, K.
AU - Suzuki, H.
AU - Mizuno, Y.
AU - Kamurai, H.
AU - Tajima, Y.
AU - Ishii, K.
AU - Fujii, Y.
AU - Sagawa, H.
AU - Suzuki, T.
AU - Ohnuma, H.
PY - 1998/10/26
Y1 - 1998/10/26
N2 - An exclusive coincidence experiment using the (p, nIASp˜) reaction on 140Ce, 172,174,176Yb, and 208Pb was carried out for the first time by measuring decay protons from the isobaric analog states (IAS). Spreading widths of the IAS are deduced from the escape and total widths. The results show a strong isospin dependence which can be explained by the isospin mixing effect due to the coupling to the T0 component among three multiplets T = T0 − 1, T0, and T0 + 1 of isovector monopole states in daughter nuclei. Empirical isospin mixing probabilities are found to be consistent with microscopic sum rule predictions.
AB - An exclusive coincidence experiment using the (p, nIASp˜) reaction on 140Ce, 172,174,176Yb, and 208Pb was carried out for the first time by measuring decay protons from the isobaric analog states (IAS). Spreading widths of the IAS are deduced from the escape and total widths. The results show a strong isospin dependence which can be explained by the isospin mixing effect due to the coupling to the T0 component among three multiplets T = T0 − 1, T0, and T0 + 1 of isovector monopole states in daughter nuclei. Empirical isospin mixing probabilities are found to be consistent with microscopic sum rule predictions.
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U2 - 10.1103/PhysRevLett.81.3607
DO - 10.1103/PhysRevLett.81.3607
M3 - Article
AN - SCOPUS:4243762862
VL - 81
SP - 3607
EP - 3610
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 17
ER -