☆ 4.5 Article

Discovery of a new isomeric state in 68Ni: Evidence for a highly deformed proton intruder state

PHYSICAL REVIEW C (2012)

期刊

PHYSICAL REVIEW C

卷 85, 期 3, 页码 -

出版社

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevC.85.031301

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Physics, Nuclear

资金

IN2P3, France
MICINN, Spain [AIC10-D-000429]
MICINN
Generalitat Valenciana, Spain [FPA2008-06419, PROMETEO/2010/101]
Chinese Academy of Science, China

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摘要

We report on the observation of a new isomeric state in Ni-68. We suggest that the newly observed state at 168(1) keV above the first 2(+) state is a pi(2p-2h) 0(+) state across the major Z = 28 shell gap. Comparison with theoretical calculations indicates a pure proton intruder configuration and the deduced low-lying structure of this key nucleus suggests a possible shape coexistence scenario involving a highly deformed state.

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Summary: In this study, nuclear level densities (NLDs) and gamma-ray strength functions (GSFs) of 120,124Sn were extracted using the Oslo method. The functional forms of the GSFs and NLDs were further constrained using the Shape method. The experimental results show good agreement with previous measurements for other isotopes.

PHYSICAL REVIEW C (2022)

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Article Physics, Nuclear

Evolution of the ?-ray strength function in neodymium isotopes

M. Guttormsen, K. O. Ay, M. Ozgur, E. Algin, A. C. Larsen, F. L. Bello Garrote, H. C. Berg, L. Crespo Campo, T. Dahl-Jacobsen, F. W. Furmyr, D. Gjestvang, A. Gorgen, T. W. Hagen, V. W. Ingeberg, B. Kheswa, I. K. B. Kullmann, M. Klintefjord, M. Markova, J. E. Midtbo, V Modamio, W. Paulsen, L. G. Pedersen, T. Renstrom, E. Sahin, S. Siem, G. M. Tveten, M. Wiedeking

Summary: The experimental gamma-ray strength functions of Nd-142, Nd-144-151 have been studied, and the results indicate a unique set of gamma SFs for an isotopic chain with increasing nuclear deformation. The study reveals the evolution of low-energy enhancement, scissors mode, and pygmy dipole resonance with nuclear deformation and mass number.

PHYSICAL REVIEW C (2022)

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