Universität zu Köln

Stoyanova, M., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Beckers, M., Dewald, A., Djongolov, M., Esmaylzadeh, A., Fransen, C., Gerhard, L. M., Gladnishki, K. A., Herb, S., John, P. R., Karayonchev, V, Keatings, J. M., Kern, R., Knafla, Lukas ORCID: 0000-0001-7926-4639, Kocheva, D., Kornwebel, L., Kroell, Th, Ley, M., Mashtakov, K. M., Mueller-Gatermann, C., Regis, J. M., Scheck, M., Schomacker, K., Sinclair, J., Spagnoletti, P., Suerder, C., Warr, N., Werner, V and Wiederhold, J. (2019). Lifetimes of the 4(1)(+) states of Po-206 and Po-204: A study of the transition from noncollective seniority-like mode to collectivity. Phys. Rev. C, 100 (6). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

Low-lying yrast states of Po-204 and Po-206 were investigated by the gamma-gamma fast timing technique with LaBr3(Ce) detectors. Excited states of these nuclei were populated in the Au-197(B-11, 4n)Po-204 and the Pt-198(C-12, 4n )Po-206 fusion-evaporation reactions, respectively. The beams were delivered by the FN-Tandem accelerator at the University of Cologne. The lifetimes of the 4(1)(+) states of both nuclei were measured, along with an upper lifetime limit for the 2(1)(+) state of Po-204. A comparison between the derived B(E2; 4(1)(+) -> 2(1)(+)) values and results from simplified empirical two-state mixing calculations suggests that for the 4(1)(+) states of even-even polonium isotopes the transition from single-particle mode at N = 126 to collective mode, when reducing the number of neutrons, occurs above N = 122.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stoyanova, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rainovski, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jolie, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pietralla, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Blazhev, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beckers, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dewald, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Djongolov, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Esmaylzadeh, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fransen, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerhard, L. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gladnishki, K. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herb, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED John, P. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Karayonchev, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Keatings, J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kern, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Knafla, Lukas lknafla@ikp.uni-koeln.de orcid.org/0000-0001-7926-4639 UNSPECIFIED Kocheva, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kornwebel, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kroell, Th UNSPECIFIED UNSPECIFIED UNSPECIFIED Ley, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mashtakov, K. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller-Gatermann, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Regis, J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheck, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schomacker, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sinclair, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Spagnoletti, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Suerder, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Warr, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Werner, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiederhold, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-124686
DOI:	10.1103/PhysRevC.100.064304
Journal or Publication Title:	Phys. Rev. C
Volume:	100
Number:	6
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9993
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Nuclear Physics
Subjects:	Natural sciences and mathematics
Uncontrolled Keywords:	Keywords Language NUCLEAR-DATA SHEETS; SHELL Multiple languages Physics, Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12468