Isospin symmetry in the structure study of unstable nuclei

Y. Fujita; G. P.A. Berg; A. D. Bacher; T. Black; C. C. Foster; H. Fujimura; H. Fujita; K. Hara; K. Hatanaka; J. Jänecke; J. Kamiya; K. Katori; T. Kawabata; W. Lozowski; T. Noro; D. A. Roberts; Y. Shimbara; E. J. Stephenson; H. Ueno; T. Yamanaka; M. Yosoi

doi:10.1143/ptps.146.473

Isospin symmetry in the structure study of unstable nuclei

Y. Fujita, G. P.A. Berg, A. D. Bacher, T. Black, C. C. Foster, H. Fujimura, H. Fujita, K. Hara, K. Hatanaka, J. Jänecke, J. Kamiya, K. Katori, T. Kawabata, W. Lozowski, T. Noro, D. A. Roberts, Y. Shimbara, E. J. Stephenson, H. Ueno, T. YamanakaM. Yosoi

Experimental Particle Physics

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

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Abstract

Assuming isospin T is a good quantum number, the analog states of the low-lying states in T_z = ±(T₀+1) nuclei can be found as excited T₀+1 states in T_z = ±T₀ nuclei. Therefore, if T₀ + 1 states are identified in the excited region of T_z = ±T₀ nuclei, the structure of unstable nuclei with T_z = ±(T₀ + 1) can be deduced. We measured and compared the transition strengths to pairs of excited analog states in inelastic and charge-exchange reactions on the same target nucleus. The T values of these analog states were identified by using the fact that the transition strengths to them are different depending on T. The identification of T = 1/2 and 3/2 nature of analog MI and GT states in the mirror nuclei pair ²⁷Al and ²⁷Si is reported by comparing the transition strengths in high-resolution ²⁷Al(p,p′) and ²⁷Al(³He, t)²⁷Si reactions at 0°. The identified T = 3/2 states are analogous to the low-lying states of ²⁷Mg, which plays an important role in rp-process of nucleosynthesis.

Original language	English
Pages (from-to)	473-477
Number of pages	5
Journal	Progress of Theoretical Physics
Issue number	146 SUPPL.
DOIs	https://doi.org/10.1143/ptps.146.473
Publication status	Published - 2002

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1143/ptps.146.473

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Fujita, Y., Berg, G. P. A., Bacher, A. D., Black, T., Foster, C. C., Fujimura, H., Fujita, H., Hara, K., Hatanaka, K., Jänecke, J., Kamiya, J., Katori, K., Kawabata, T., Lozowski, W., Noro, T., Roberts, D. A., Shimbara, Y., Stephenson, E. J., Ueno, H., ... Yosoi, M. (2002). Isospin symmetry in the structure study of unstable nuclei. Progress of Theoretical Physics, (146 SUPPL.), 473-477. https://doi.org/10.1143/ptps.146.473

Fujita, Y, Berg, GPA, Bacher, AD, Black, T, Foster, CC, Fujimura, H, Fujita, H, Hara, K, Hatanaka, K, Jänecke, J, Kamiya, J, Katori, K, Kawabata, T, Lozowski, W, Noro, T, Roberts, DA, Shimbara, Y, Stephenson, EJ, Ueno, H, Yamanaka, T & Yosoi, M 2002, 'Isospin symmetry in the structure study of unstable nuclei', Progress of Theoretical Physics, no. 146 SUPPL., pp. 473-477. https://doi.org/10.1143/ptps.146.473

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title = "Isospin symmetry in the structure study of unstable nuclei",

abstract = "Assuming isospin T is a good quantum number, the analog states of the low-lying states in Tz = ±(T0+1) nuclei can be found as excited T0+1 states in Tz = ±T0 nuclei. Therefore, if T0 + 1 states are identified in the excited region of Tz = ±T0 nuclei, the structure of unstable nuclei with Tz = ±(T0 + 1) can be deduced. We measured and compared the transition strengths to pairs of excited analog states in inelastic and charge-exchange reactions on the same target nucleus. The T values of these analog states were identified by using the fact that the transition strengths to them are different depending on T. The identification of T = 1/2 and 3/2 nature of analog MI and GT states in the mirror nuclei pair 27Al and 27Si is reported by comparing the transition strengths in high-resolution 27Al(p,p′) and 27Al(3He, t)27Si reactions at 0°. The identified T = 3/2 states are analogous to the low-lying states of 27Mg, which plays an important role in rp-process of nucleosynthesis.",

author = "Y. Fujita and Berg, {G. P.A.} and Bacher, {A. D.} and T. Black and Foster, {C. C.} and H. Fujimura and H. Fujita and K. Hara and K. Hatanaka and J. J{\"a}necke and J. Kamiya and K. Katori and T. Kawabata and W. Lozowski and T. Noro and Roberts, {D. A.} and Y. Shimbara and Stephenson, {E. J.} and H. Ueno and T. Yamanaka and M. Yosoi",

year = "2002",

doi = "10.1143/ptps.146.473",

language = "English",

pages = "473--477",

journal = "Progress of Theoretical Physics",

issn = "0033-068X",

publisher = "Published for the Research Institute for Fundamental Physics by Physical Society of Japan",

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T1 - Isospin symmetry in the structure study of unstable nuclei

AU - Fujita, Y.

AU - Berg, G. P.A.

AU - Bacher, A. D.

AU - Black, T.

AU - Foster, C. C.

AU - Fujimura, H.

AU - Fujita, H.

AU - Hara, K.

AU - Hatanaka, K.

AU - Jänecke, J.

AU - Kamiya, J.

AU - Katori, K.

AU - Kawabata, T.

AU - Lozowski, W.

AU - Noro, T.

AU - Roberts, D. A.

AU - Shimbara, Y.

AU - Stephenson, E. J.

AU - Ueno, H.

AU - Yamanaka, T.

AU - Yosoi, M.

PY - 2002

Y1 - 2002

N2 - Assuming isospin T is a good quantum number, the analog states of the low-lying states in Tz = ±(T0+1) nuclei can be found as excited T0+1 states in Tz = ±T0 nuclei. Therefore, if T0 + 1 states are identified in the excited region of Tz = ±T0 nuclei, the structure of unstable nuclei with Tz = ±(T0 + 1) can be deduced. We measured and compared the transition strengths to pairs of excited analog states in inelastic and charge-exchange reactions on the same target nucleus. The T values of these analog states were identified by using the fact that the transition strengths to them are different depending on T. The identification of T = 1/2 and 3/2 nature of analog MI and GT states in the mirror nuclei pair 27Al and 27Si is reported by comparing the transition strengths in high-resolution 27Al(p,p′) and 27Al(3He, t)27Si reactions at 0°. The identified T = 3/2 states are analogous to the low-lying states of 27Mg, which plays an important role in rp-process of nucleosynthesis.

AB - Assuming isospin T is a good quantum number, the analog states of the low-lying states in Tz = ±(T0+1) nuclei can be found as excited T0+1 states in Tz = ±T0 nuclei. Therefore, if T0 + 1 states are identified in the excited region of Tz = ±T0 nuclei, the structure of unstable nuclei with Tz = ±(T0 + 1) can be deduced. We measured and compared the transition strengths to pairs of excited analog states in inelastic and charge-exchange reactions on the same target nucleus. The T values of these analog states were identified by using the fact that the transition strengths to them are different depending on T. The identification of T = 1/2 and 3/2 nature of analog MI and GT states in the mirror nuclei pair 27Al and 27Si is reported by comparing the transition strengths in high-resolution 27Al(p,p′) and 27Al(3He, t)27Si reactions at 0°. The identified T = 3/2 states are analogous to the low-lying states of 27Mg, which plays an important role in rp-process of nucleosynthesis.

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JO - Progress of Theoretical Physics

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ER -

Isospin symmetry in the structure study of unstable nuclei

Abstract

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