Collectivity and Configuration Mixing in {sup 186,188}Pb and {sup 194}Po

Journal Article · Fri Aug 11 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.062501· OSTI ID:20860638

Grahn, T; Julin, R; Eeckhaudt, S; Greenlees, P T; Jones, P; Juutinen, S; Kettunen, H; Leino, M; Leppaenen, A -P; Nieminen, P; Nyman, M; Rahkila, P; Sandzelius, M; Saren, J; Scholey, C; Uusitalo, J ^[1]; Dewald, A; Moeller, O; Christen, S; Jolie, J ^[2]

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1. Department of Physics, University of Jyvaeskylae, P. O. Box 35, FI-40014 Jyvaeskylae (Finland)
2. Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicher Strasse 77, 50937 Cologne (Germany)

Lifetimes of prolate intruder states in {sup 186}Pb and oblate intruder states in {sup 194}Po have been determined by employing, for the first time, the recoil-decay tagging technique in recoil distance Doppler-shift lifetime measurements. In addition, lifetime measurements of prolate states in {sup 188}Pb up to the 8{sup +} state were carried out using the recoil-gating method. The B(E2) values have been deduced from which deformation parameters vertical bar {beta}{sub 2} vertical bar =0.29(5) and vertical bar {beta}{sub 2} vertical bar =0.17(3) for the prolate and the oblate bands, respectively, have been extracted. The results also shed new light on the mixing between different shapes.

• OSTI ID: 20860638
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CONFIGURATION MIXING
DEFORMED NUCLEI
DOPPLER EFFECT
LEAD 186
LEAD 188
LIFETIME
NUCLEAR DECAY
POLONIUM 194
RECOILS