Coulomb excitation of 174Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam

T. Morikawa; Y. Gono; K. Morita; T. Kishida; T. Murakami; E. Ideguchi; H. Kumagai; G. H. Liu; A. Ferragut; A. Yoshida; Y. H. Zhang; M. Oshima; M. Sugawara; H. Kusakari; M. Ogawa; M. Nakajima; H. Tsuchida; S. Mitarai; A. Odahara; M. Kidera; M. Shibata; J. C. Kim; S. J. Chae; Y. Hatsukawa; M. Ishihara

doi:10.1016/0370-2693(95)00345-L

Coulomb excitation of ¹⁷⁴Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam

T. Morikawa, Y. Gono, K. Morita, T. Kishida, T. Murakami, E. Ideguchi, H. Kumagai, G. H. Liu, A. Ferragut, A. Yoshida, Y. H. Zhang, M. Oshima, M. Sugawara, H. Kusakari, M. Ogawa, M. Nakajima, H. Tsuchida, S. Mitarai, A. Odahara, M. KideraM. Shibata, J. C. Kim, S. J. Chae, Y. Hatsukawa, M. Ishihara

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

A new experimental technique utilizing a high-spin isomer beam (HSIB) has been developed. The HSIB of ¹⁷⁴Hf was produced by the ⁹Be(¹⁷⁰Er, 5n)¹⁷⁴Hf reaction in inverse kinematics. By using the HSIB, the Coulomb excitation of the K^π = 8^- isomer in ¹⁷⁴Hf was measured. The γ-rays from the 9^- level, which is the first excited state built on the isomer, were observed as well as the cascade γ-rays of the ground-state rotational band. From the measured γ-ray yield, a value of 2 ± 1 e²b² was extracted for the B(E2: 8^- → 9^-). This is the first experiment of γ-ray spectroscopy by means of the HSIB-induced secondary reactions.

Original language	English
Pages (from-to)	169-172
Number of pages	4
Journal	Physics Letters B
Volume	350
Issue number	2
DOIs	https://doi.org/10.1016/0370-2693(95)00345-L
Publication status	Published - May 11 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(95)00345-L

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Morikawa, T., Gono, Y., Morita, K., Kishida, T., Murakami, T., Ideguchi, E., Kumagai, H., Liu, G. H., Ferragut, A., Yoshida, A., Zhang, Y. H., Oshima, M., Sugawara, M., Kusakari, H., Ogawa, M., Nakajima, M., Tsuchida, H., Mitarai, S., Odahara, A., ... Ishihara, M. (1995). Coulomb excitation of ¹⁷⁴Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam. Physics Letters B, 350(2), 169-172. https://doi.org/10.1016/0370-2693(95)00345-L

Coulomb excitation of ¹⁷⁴Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam. / Morikawa, T.; Gono, Y.; Morita, K.; Kishida, T.; Murakami, T.; Ideguchi, E.; Kumagai, H.; Liu, G. H.; Ferragut, A.; Yoshida, A.; Zhang, Y. H.; Oshima, M.; Sugawara, M.; Kusakari, H.; Ogawa, M.; Nakajima, M.; Tsuchida, H.; Mitarai, S.; Odahara, A.; Kidera, M.; Shibata, M.; Kim, J. C.; Chae, S. J.; Hatsukawa, Y.; Ishihara, M.

In: Physics Letters B, Vol. 350, No. 2, 11.05.1995, p. 169-172.

Research output: Contribution to journal › Article

Morikawa, T, Gono, Y, Morita, K, Kishida, T, Murakami, T, Ideguchi, E, Kumagai, H, Liu, GH, Ferragut, A, Yoshida, A, Zhang, YH, Oshima, M, Sugawara, M, Kusakari, H, Ogawa, M, Nakajima, M, Tsuchida, H, Mitarai, S, Odahara, A, Kidera, M, Shibata, M, Kim, JC, Chae, SJ, Hatsukawa, Y & Ishihara, M 1995, 'Coulomb excitation of ¹⁷⁴Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam', Physics Letters B, vol. 350, no. 2, pp. 169-172. https://doi.org/10.1016/0370-2693(95)00345-L

Morikawa, T. ; Gono, Y. ; Morita, K. ; Kishida, T. ; Murakami, T. ; Ideguchi, E. ; Kumagai, H. ; Liu, G. H. ; Ferragut, A. ; Yoshida, A. ; Zhang, Y. H. ; Oshima, M. ; Sugawara, M. ; Kusakari, H. ; Ogawa, M. ; Nakajima, M. ; Tsuchida, H. ; Mitarai, S. ; Odahara, A. ; Kidera, M. ; Shibata, M. ; Kim, J. C. ; Chae, S. J. ; Hatsukawa, Y. ; Ishihara, M. / Coulomb excitation of ¹⁷⁴Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam. In: Physics Letters B. 1995 ; Vol. 350, No. 2. pp. 169-172.

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title = "Coulomb excitation of 174Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam",

abstract = "A new experimental technique utilizing a high-spin isomer beam (HSIB) has been developed. The HSIB of 174Hf was produced by the 9Be(170Er, 5n)174Hf reaction in inverse kinematics. By using the HSIB, the Coulomb excitation of the Kπ = 8- isomer in 174Hf was measured. The γ-rays from the 9- level, which is the first excited state built on the isomer, were observed as well as the cascade γ-rays of the ground-state rotational band. From the measured γ-ray yield, a value of 2 ± 1 e2b2 was extracted for the B(E2: 8- → 9-). This is the first experiment of γ-ray spectroscopy by means of the HSIB-induced secondary reactions.",

author = "T. Morikawa and Y. Gono and K. Morita and T. Kishida and T. Murakami and E. Ideguchi and H. Kumagai and Liu, {G. H.} and A. Ferragut and A. Yoshida and Zhang, {Y. H.} and M. Oshima and M. Sugawara and H. Kusakari and M. Ogawa and M. Nakajima and H. Tsuchida and S. Mitarai and A. Odahara and M. Kidera and M. Shibata and Kim, {J. C.} and Chae, {S. J.} and Y. Hatsukawa and M. Ishihara",

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doi = "10.1016/0370-2693(95)00345-L",

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T1 - Coulomb excitation of 174Hf K-isomer. γ-ray spectroscopy with high-spin isomer beam

AU - Morikawa, T.

AU - Gono, Y.

AU - Morita, K.

AU - Kishida, T.

AU - Murakami, T.

AU - Ideguchi, E.

AU - Kumagai, H.

AU - Liu, G. H.

AU - Ferragut, A.

AU - Yoshida, A.

AU - Zhang, Y. H.

AU - Oshima, M.

AU - Sugawara, M.

AU - Kusakari, H.

AU - Ogawa, M.

AU - Nakajima, M.

AU - Tsuchida, H.

AU - Mitarai, S.

AU - Odahara, A.

AU - Kidera, M.

AU - Shibata, M.

AU - Kim, J. C.

AU - Chae, S. J.

AU - Hatsukawa, Y.

AU - Ishihara, M.

PY - 1995/5/11

Y1 - 1995/5/11

N2 - A new experimental technique utilizing a high-spin isomer beam (HSIB) has been developed. The HSIB of 174Hf was produced by the 9Be(170Er, 5n)174Hf reaction in inverse kinematics. By using the HSIB, the Coulomb excitation of the Kπ = 8- isomer in 174Hf was measured. The γ-rays from the 9- level, which is the first excited state built on the isomer, were observed as well as the cascade γ-rays of the ground-state rotational band. From the measured γ-ray yield, a value of 2 ± 1 e2b2 was extracted for the B(E2: 8- → 9-). This is the first experiment of γ-ray spectroscopy by means of the HSIB-induced secondary reactions.

AB - A new experimental technique utilizing a high-spin isomer beam (HSIB) has been developed. The HSIB of 174Hf was produced by the 9Be(170Er, 5n)174Hf reaction in inverse kinematics. By using the HSIB, the Coulomb excitation of the Kπ = 8- isomer in 174Hf was measured. The γ-rays from the 9- level, which is the first excited state built on the isomer, were observed as well as the cascade γ-rays of the ground-state rotational band. From the measured γ-ray yield, a value of 2 ± 1 e2b2 was extracted for the B(E2: 8- → 9-). This is the first experiment of γ-ray spectroscopy by means of the HSIB-induced secondary reactions.

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