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희귀 핵 연구단
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Various collective states in the I-124 nucleus

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Title
Various collective states in the I-124 nucleus
Author(s)
Chang Bum Moon; B. Moon; JooChun Park; Dracoulis, G.D.; Kibedi, T.; Bark, R.A.; Byrne, A.P.; Davidson, P.A.; Lane, G.J.; Wilson, A.N.
Publication Date
2021-03
Journal
Physical Review c, v.103, no.3, pp.1 - 11
Publisher
AMER PHYSICAL SOC
Abstract
The level structure of I-124 (Z = 53, N = 71) has been studied via the Sn-122(Li-7, (5)n) I-124 reaction with a beam energy of 54 MeV. Through in-beam and out-of-beam gamma-ray spectroscopy, the sophisticated low-lying levels including isomeric states and numerous collective states have been established for the first time. A positive-parity collective band built on the 10(+) state at 1297 keV is interpreted as being associated with the combination of a proton and a neutron in the same intruder h(11/2) orbital, namely the pi h(11/2)nu h(11/2) configuration. This band shows a typical quadrupole vibrational character. In contrast, the negative parity bands based on the pi g(7/2)nu h(11/2) configuration show a soft triaxial rotation. An isomeric 8(-) state at 689 keV with a half-life of 14 ns can be explained as a K isomer due to a proton with an Omega(p) = 9/2 in the g(9/2) orbital coupled to a neutron with an Omega n = 7/2 in the h(11/2) orbital. The excited states based on this pi g(9/2)nu h(11/2) configuration show a coupled rotational structure. Another coupled rotational band built on the 6(+) state at 714 keV is thought to be based on the pg(9/2)nu d(3/2) configuration.
URI
https://pr.ibs.re.kr/handle/8788114/12093
DOI
10.1103/PhysRevC.103.034318
ISSN
2469-9985
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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