Isospin mixing in the isobaric analog state derived from the (p, nIASp˜) reaction on 140Ce, 172,174,176Yb, and 208Pb

H. Orihara; C. C. Yun; A. Terakawa; K. Itoh; A. Yamamoto; K. Kawami; H. Suzuki; Y. Mizuno; H. Kamurai; Y. Tajima; K. Ishii; Y. Fujii; H. Sagawa; T. Suzuki; H. Ohnuma

doi:10.1103/PhysRevLett.81.3607

Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb

H. Orihara, C. C. Yun, A. Terakawa, K. Itoh, A. Yamamoto, K. Kawami, H. Suzuki, Y. Mizuno, H. Kamurai, Y. Tajima, K. Ishii, Y. Fujii, H. Sagawa, T. Suzuki, H. Ohnuma

Research output: Contribution to journal › Article › peer-review

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Abstract

An exclusive coincidence experiment using the (p, n_IASp^˜) 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.

Original language	English
Pages (from-to)	3607-3610
Number of pages	4
Journal	Physical Review Letters
Volume	81
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.81.3607
Publication status	Published - 1998 Oct 26

ASJC Scopus subject areas

Physics and Astronomy(all)

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Orihara, H., Yun, C. C., Terakawa, A., Itoh, K., Yamamoto, A., Kawami, K., Suzuki, H., Mizuno, Y., Kamurai, H., Tajima, Y., Ishii, K., Fujii, Y., Sagawa, H., Suzuki, T., & Ohnuma, H. (1998). Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb. Physical Review Letters, 81(17), 3607-3610. https://doi.org/10.1103/PhysRevLett.81.3607

Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb. / Orihara, H.; Yun, C. C.; Terakawa, A.; Itoh, K.; Yamamoto, A.; Kawami, K.; Suzuki, H.; Mizuno, Y.; Kamurai, H.; Tajima, Y.; Ishii, K.; Fujii, Y.; Sagawa, H.; Suzuki, T.; Ohnuma, H.

In: Physical Review Letters, Vol. 81, No. 17, 26.10.1998, p. 3607-3610.

Research output: Contribution to journal › Article › peer-review

Orihara, H, Yun, CC, Terakawa, A, Itoh, K, Yamamoto, A, Kawami, K, Suzuki, H, Mizuno, Y, Kamurai, H, Tajima, Y, Ishii, K, Fujii, Y, Sagawa, H, Suzuki, T & Ohnuma, H 1998, 'Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb', Physical Review Letters, vol. 81, no. 17, pp. 3607-3610. https://doi.org/10.1103/PhysRevLett.81.3607

Orihara, H. ; Yun, C. C. ; Terakawa, A. ; Itoh, K. ; Yamamoto, A. ; Kawami, K. ; Suzuki, H. ; Mizuno, Y. ; Kamurai, H. ; Tajima, Y. ; Ishii, K. ; Fujii, Y. ; Sagawa, H. ; Suzuki, T. ; Ohnuma, H. / Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb. In: Physical Review Letters. 1998 ; Vol. 81, No. 17. pp. 3607-3610.

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abstract = "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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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.

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Isospin mixing in the isobaric analog state derived from the (p, n_IASp^˜) reaction on ¹⁴⁰Ce, ^172,174,176Yb, and ²⁰⁸Pb

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