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:
CreatorsEmailORCIDORCID Put Code
Pascu, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bucurescu, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cata-Danil, GhUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Derya, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elvers, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Filipescu, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ghita, D. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Glodariu, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hennig, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mihai, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marginean, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Negret, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Netterdon, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pickstone, S. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sava, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Spieker, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stroe, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zamfir, N. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zilges, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
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:
KeywordsLanguage
NUCLEAR-DATA SHEETS; INTERACTING BOSON APPROXIMATION; DEFORMED-NUCLEI; COULOMB-EXCITATION; TRANSITION; MODEL; PAIRMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/40971

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