Sekal, S., Fraile, L. M., Lica, R., Borge, M. J. G., Walters, W. B., Aprahamian, A., Benchouk, C., Bernards, C., Briz, J. A., Bucher, B., Chiara, C. J., Dlouhy, Z., Gheorghe, I, Ghita, D. G., Hoff, P., Jolie, J., Koster, U., Kurcewicz, W., Mach, H., Marginean, N., Marginean, R., Meliani, Z., Olaizola, B., Paziy, V, Regis, J. M., Rudigier, M., Sava, T., Simpson, G. S., Stanoiu, M. and Stroe, L. (2021). Low-spin states in Ge-80 populated in the beta decay of the Ga-80 3(-) isomer. Phys. Rev. C, 104 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

The structure of Ge-80 has been investigated at the ISOLDE facility at CERN. A previous study reported for the first time a low-lying 0(2)(+) intruder state at 639 keV, based on the coincidence with a previously unobserved 1764-keV gamma ray, and suggested it as evidence for shape coexistence in Ge-80. We used the beta decay from the 3(-) 22.4-keV state in Ga-80 to enhance the population of low-spin states in Ge-80, including any excited 0(+) level, and gamma gamma coincidences to investigate it. We observed a 1764-keV gamma ray in coincidence with strong transitions in Ge-80, thus not feeding the proposed 639-keV 0(2)(+). No connecting transitions from previously known levels to the 639-keV and 2403-keV 2(3)(+) states could be established either. Shell-model calculations for Ge isotopes and N = 48 isotones were performed. They succeed to explain most of the experimental levels, but fail to reproduce the presence of a 0(2)(+) state below approximate to 1200 keV in Ge-80. Our experimental findings and shell-model calculations are difficult to reconcile with a very low-lying 0(2)(+) state in Ge-80.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sekal, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fraile, L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lica, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borge, M. J. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walters, W. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aprahamian, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benchouk, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bernards, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Briz, J. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bucher, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chiara, C. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dlouhy, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gheorghe, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ghita, D. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hoff, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jolie, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koster, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurcewicz, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mach, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meliani, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olaizola, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paziy, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Regis, J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rudigier, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sava, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simpson, G. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stanoiu, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stroe, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606362
DOI: 10.1103/PhysRevC.104.024317
Journal or Publication Title: Phys. Rev. C
Volume: 104
Number: 2
Date: 2021
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9993
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SHAPE COEXISTENCE; SHELL-MODEL; ISOTOPES; NUCLEI; BEAMMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60636

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