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Investigations of the level scheme of Gd-144 and lifetimes in the quadrupole bands
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2004 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 21, no 1, 37-55 p.Article in journal (Refereed) Published
Abstract [en]

For a level scheme investigation of Gd-144 an experiment with the gamma-spectrometer EUROBALL III has been carried out and lifetimes have been measured with the gamma-spectrometer GASP using the Doppler-shift attenuation method. The high-spin states have been populated in these experiments by means of the Mo-100(Ti-48,4n) reaction at 215 MeV and the Cd-114(S-36,6n) reaction at E = 182 MeV, respectively. The known quadrupole band has been modified and a new one has been established. Reduced E2 transition probabilities B(E2) were determined for seven members of these quadrupole bands. They show values between approximate to60 and 130 W.u. and this considerable enhancement gives evidence for a significant nuclear deformation. A (pih(11/2))(2) circle times (vh(11/2))(-2) configuration may be assigned to one of the quadrupole bands according to total Routhian surface calculations. The spin dependence of the B(E2) values has been explained by IBM calculations involving high-spin quasiparticle excitations.

Place, publisher, year, edition, pages
2004. Vol. 21, no 1, 37-55 p.
Keyword [en]
shift attenuation method, i13/2 intruder band, parity bands, transition, nuclei, gate, states, shape
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23621DOI: 10.1140/epja/i2003-10181-4ISI: 000223020600005Scopus ID: 2-s2.0-4043144352OAI: oai:DiVA.org:kth-23621DiVA: diva2:342320
Note

QC 20100525 QC 20111103

Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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