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Coherent proton-neutron contribution to octupole correlations in the neutron-deficient Xe-114 nucleus
Vise andre og tillknytning
2002 (engelsk)Inngår i: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 535, nr 04-jan, s. 93-102Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Gamma ray linear polarization and picosecond lifetimes have been measured for levels in the neutron deficient nucleus Xe-114 using the EUROBALL IV spectrometer and the Cologne plunger device. The EUCLIDES Si-ball was used to improve the reaction channel selectivity. The linear polarization results have, for the first time, unambiguously determined the electromagnetic character of the dipole transitions de-exciting the negative parity level sequence, providing clear evidence for enhanced octupole collectivity. The discovery of two E3 transitions and the measurement of the lifetimes of the states depopulated by these transitions have allowed a quantitative determination of the octupole collectivity in the A approximate to 112 mass region. The large measured B(E3) values, close to approximate to 70 W.u., are among the strongest observed hitherto and indicate a coherent proton-neutron contribution to the octupole moment.

sted, utgiver, år, opplag, sider
2002. Vol. 535, nr 04-jan, s. 93-102
Emneord [en]
Xe-114, linear polarization, gamma-gamma-light charged particle coincidences, lifetimes, octupole correlations, decay curve method, ba-ce-region, high spins, deformed-nuclei, shape changes, instability, mass
Identifikatorer
URN: urn:nbn:se:kth:diva-21608ISI: 000176094400015OAI: oai:DiVA.org:kth-21608DiVA, id: diva2:340306
Merknad
QC 20100525Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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