Universität zu Köln

Pascu, S., Bucurescu, D., Cata-Danil, Gh, Derya, V., Elvers, M., Filipescu, D., Ghita, D. G., Glodariu, T., Hennig, A., Mihai, C., Marginean, N., Marginean, R., Negret, A., Netterdon, L., Pickstone, S. G., Sava, T., Spieker, M., Stroe, L., Zamfir, N. V. and Zilges, A. (2015). Detailed spectroscopy of quadrupole and octupole states in Yb-168. Phys. Rev. C, 91 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

The low-lying positive-and negative-parity states in Yb-168 have been investigated by means of the (alpha, 2n gamma) fusion evaporation reaction. Using the coincidence method, the level scheme was corrected and extended up to 3MeV, for both the positive-and negative-parity states. Using the new branching ratios determined in the present experiment, the K quantum number was proposed for two negative-parity bands by direct comparison with the Alaga rule. Like in some other nuclei, one negative-parity band was established, decaying predominantly to the gamma-vibrational band. In a second experiment, the lifetimes of the low-lying excited states up to J(pi) = 6(+) in the ground-state band were measured by using the in-beam fast-timing method with the Bucharest mixed high-purity germanium (HPGe) and LaBr3:Ce detector array using the triple-gamma coincidence method. Reduced E2 transition probabilities were extracted from the measured lifetimes and compared with the corresponding observables in neighboring isotopes, showing a smooth behavior with increasing mass. The positive-and negative-parity states as well as E1 and E2 transition probability ratios revealed by these experiments are compared with the interacting boson model in the sd and spdf boson space, and with the confined beta-soft rotor model, and are found to be in good agreement.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pascu, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bucurescu, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cata-Danil, Gh UNSPECIFIED UNSPECIFIED UNSPECIFIED Derya, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Elvers, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Filipescu, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ghita, D. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Glodariu, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hennig, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mihai, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marginean, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Negret, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Netterdon, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pickstone, S. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sava, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Spieker, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stroe, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zamfir, N. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zilges, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-409719
DOI:	10.1103/PhysRevC.91.034321
Journal or Publication Title:	Phys. Rev. C
Volume:	91
Number:	3
Date:	2015
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1089-490X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NUCLEAR-DATA SHEETS; INTERACTING BOSON APPROXIMATION; DEFORMED-NUCLEI; COULOMB-EXCITATION; TRANSITION; MODEL; PAIR Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/40971