Article
A K = 3 two-quasiparticle isomer in 98 Sr
Author/s | Lhersonneau, G.
Pfeiffer, B. Capote, R. Quesada Molina, José Manuel Gabelmann, H. Kratz, K. L. |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2002 |
Deposit Date | 2022-02-23 |
Published in |
|
Abstract | The decay of on-line mass-separated
98
Rb
to
98
Sr
is studied by
γ
spectroscopy. The revised decay scheme adds further evidence of the coexistence of very different shapes in
98
Sr
.
A set of levels is ... The decay of on-line mass-separated 98 Rb to 98 Sr is studied by γ spectroscopy. The revised decay scheme adds further evidence of the coexistence of very different shapes in 98 Sr . A set of levels is proposed to originate from particle-hole pair excitations across the Z = 40 spherical gap in analogy with 96 Sr . A deformed K = 3 band with probable even parity is built on a 7.1-ns isomer at 1838 keV. It is interpreted as a two-quasineutron excitation in accordance with a quantum Monte Carlo pairing calculation based on a deformed shell model. Configurations of the calculated lowest-lying two-quasiparticle levels confirm the importance of the [404]9/2 neutron orbital at the largest deformations in the neutron-rich A ≃ 100 region. |
Citation | Lhersonneau, G., Pfeiffer, B., Capote, R., Quesada Molina, J.M., Gabelmann, H. y Kratz, K.L. (2002). A K = 3 two-quasiparticle isomer in 98 Sr. Physics Letters C, 65, 024318. |
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PhysRevC.65.024318.pdf | 196.0Kb | [PDF] | View/ | |