Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Sekal, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fraile, L. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lica, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Borge, M. J. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Walters, W. B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Aprahamian, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benchouk, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bernards, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Briz, J. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bucher, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chiara, C. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dlouhy, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gheorghe, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Ghita, D. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hoff, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Koster, U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurcewicz, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mach, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Meliani, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Olaizola, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Paziy, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Regis, J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rudigier, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sava, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Simpson, G. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stanoiu, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stroe, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED
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:	Keywords Language SHAPE COEXISTENCE; SHELL-MODEL; ISOTOPES; NUCLEI; BEAM Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60636