Collectivity of dipole bands in
- 1 January 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 51 (1) , 115-124
- https://doi.org/10.1103/physrevc.51.115
Abstract
The lifetimes of states in two of the ΔI=1 bands in have been measured using the Doppler shift attenuation method, and a new ΔI=1 band has been observed in this nucleus. States in the bands were populated in the reaction Si,4n) at a beam energy of 142 MeV. Individual level lifetimes were extracted from the data by a analysis of the Doppler broadened γ-ray lineshapes. Under the assumption of pure M1 radiation, average reduced transition strengths B(M1)∼1.5 W.u. were obtained. The B(M1) values in both the ‘‘regular’’ and ‘‘irregular’’ bands exhibit similar dependence on spin. The neutron and proton configurations and nature of the collectivity in these bands is discussed.
Keywords
This publication has 22 references indexed in Scilit:
- Two-proton high-K oblate structures in194PbJournal of Physics G: Nuclear and Particle Physics, 1994
- Collective oblate dipole rotational bands in 198PbNuclear Physics A, 1993
- Collective and quasiparticle structures in 192PbNuclear Physics A, 1993
- Collective oblate bands inPhysical Review C, 1993
- Coexistence of collective oblate and superdeformed prolate shapes in196PbJournal of Physics G: Nuclear and Particle Physics, 1993
- First lifetime measurement of dipole collective bands in neutron-deficient lead nucleiPhysical Review Letters, 1992
- First observation of a collective dipole rotational band in the A∼200 mass regionPhysics Letters B, 1992
- Superdeformed NucleiAnnual Review of Nuclear and Particle Science, 1991
- Search for shape coexistence in194PbJournal of Physics G: Nuclear and Particle Physics, 1991
- Observation of superdeformation inPhysical Review Letters, 1989