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Observation of Isomeric Decays in the R-Process Waiting-Point Nucleus Cd-130(82)

Jungclaus, A, Caceres, L, Gorska, M, Pfutzner, M, Pietri, S, Werner-Malento, E, Grawe, H, Langanke, K, Martinez-Pinedo, G, Nowacki, F , Poves, A, Cuenca-Garcia, J J, Rudolph, D, Podolyak, Z, Regan, P H, Detistov, P, Lalkovski, S, Modamio, V, Walker, J, Bednarczyk, P, Doornenbal, P, Geissel, H, Gerl, J, Grebosz, J, Kojouharov, I, Kurz, N, Prokopowicz, W, Schaffner, H, Wollersheim, H J, Andgren, K, Benlliure, J, Benzoni, G, Bruce, A M, Casarejos, E, Cederwall, B, Crespi, F C, Hadinia, B, Hellstrom, M, Hoischen, R, Ilie, G, Jolie, J, Khaplanov, A, Kmiecik, M, Kumar, R, Maj, A, Mandal, S, Montes, F, Myalski, S, Simpson, G S, Steer, S J, Tashenov, S and Wieland, O (2007) Observation of Isomeric Decays in the R-Process Waiting-Point Nucleus Cd-130(82) Physical Review Letters, 99 (13).


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The gamma decay of excited states in the waiting-point nucleus Cd-130(82) has been observed for the first time. An 8(+) two-quasiparticle isomer has been populated both in the fragmentation of a Xe-136 beam as well as in projectile fission of U-238, making Cd-130 the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N=82 shell quenching at Z=48. They allow us to follow nuclear isomerism throughout a full major neutron shell from Cd-98(50) to Cd-130(82) and reveal, in comparison with Ni-76(48) one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Jungclaus, A
Caceres, L
Gorska, M
Pfutzner, M
Pietri, S
Werner-Malento, E
Grawe, H
Langanke, K
Martinez-Pinedo, G
Nowacki, F
Poves, A
Cuenca-Garcia, J J
Rudolph, D
Regan, P
Detistov, P
Lalkovski, S
Modamio, V
Walker, J
Bednarczyk, P
Doornenbal, P
Geissel, H
Gerl, J
Grebosz, J
Kojouharov, I
Kurz, N
Prokopowicz, W
Schaffner, H
Wollersheim, H J
Andgren, K
Benlliure, J
Benzoni, G
Bruce, A M
Casarejos, E
Cederwall, B
Crespi, F C
Hadinia, B
Hellstrom, M
Hoischen, R
Ilie, G
Jolie, J
Khaplanov, A
Kmiecik, M
Kumar, R
Maj, A
Mandal, S
Montes, F
Myalski, S
Simpson, G S
Steer, S J
Tashenov, S
Wieland, O
Date : 1 January 2007
DOI : 10.1103/PhysRevLett.99.132501
Additional Information : Published in <i>Physical Review Letters,</i> Vol. 99, Iss. 13. Copyright 2007 American Physical Society. Click <a href=>here</a> to access the journal's website.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:05
Last Modified : 06 Jul 2019 05:06

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