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K-selection in the decay of the (ν 5 2 [532] ⊗ 3 2 [411])4- isomeric state in 102Zr

Browne, F, Bruce, AM, Sumikama, T, Nishizuka, I, Nishimura, S, Doornenbal, P, Lorusso, G, Soderstrom, P-A, Watanabe, H, Daido, R , Patel, Z, Rice, S, Sinclair, L, Wu, J, Xu, ZY, Yagi, A, Baba, H, Chiga, N, Carroll, R, Didierjean, F, Fang, Y, Fukuda, N, Gey, G, Ideguchi, E, Inabe, N, Isobe, T, Kameda, D, Kojouharov, I, Kurz, N, Kubo, T, Lalkovski, S, Li, Z, Lozeva, R, Nishibata, N, Odahara, A, Podolyak, Zsolt, Regan, Patrick, Roberts, OJ, Sakurai, H, Schaffner, H, Simpson, GS, Suzuki, H, Takeda, H, Tanaka, M, Taprogge, J, Werner, V and Wieland, O (2017) K-selection in the decay of the (ν 5 2 [532] ⊗ 3 2 [411])4- isomeric state in 102Zr Physical Review C, 96 (2), 024309.

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The (ν 5 2 [532] ⊗ 3 2 [411]) 4− state in 102Zr, populated in the β-decay of 102Y, has been measured to be isomeric with a mean lifetime of 9.5(7) ns. It decays via four transitions, two of which are ∆K = 2 (to the 3+ and 4+ members of the 2+ γ band) and one is ∆K = 4 (to the 4+ member of the ground state 0+ band). The fourth (low-energy) transition is inferred to decay to an as-yet unassigned state. Hindrances of 106 were derived for the ∆K = 2 transitions compared to Weisskopf estimates and the ∆K = 4 transition hindered by a factor of 109 . These values are consistent with the decay pattern of the analogous isomeric state in the neighbouring N = 62 nucleus 100Sr and with the broader systematics of such transitions. A comparison of the hindrances for the ∆K = 4 transitions suggests that 102Zr is hardened against the γ degree of freedom compared to 100Sr.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Browne, F
Bruce, AM
Sumikama, T
Nishizuka, I
Nishimura, S
Doornenbal, P
Lorusso, G
Soderstrom, P-A
Watanabe, H
Daido, R
Patel, Z
Rice, S
Sinclair, L
Wu, J
Xu, ZY
Yagi, A
Baba, H
Chiga, N
Carroll, R
Didierjean, F
Fang, Y
Fukuda, N
Gey, G
Ideguchi, E
Inabe, N
Isobe, T
Kameda, D
Kojouharov, I
Kurz, N
Kubo, T
Lalkovski, S
Li, Z
Lozeva, R
Nishibata, N
Odahara, A
Roberts, OJ
Sakurai, H
Schaffner, H
Simpson, GS
Suzuki, H
Takeda, H
Tanaka, M
Taprogge, J
Werner, V
Wieland, O
Date : 15 August 2017
DOI : 10.1103/PhysRevC.96.024309
Copyright Disclaimer : Copyright 2017 American Physical Society
Depositing User : Melanie Hughes
Date Deposited : 03 Aug 2017 13:31
Last Modified : 16 Jan 2019 18:54

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