Structure of the K{sup {pi}} = 4{sup +} bands in {sup 186,188}Os

Journal Article · Wed Jan 28 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087042· OSTI ID:21255437

Phillips, A A; Garrett, P E; Demand, G A; Finlay, P; Green, K L; Leach, K G; Schumaker, M A; Svensson, C E; Wong, J ^[1]; Bettermann, L; Braun, N ^[2]; Burke, D G ^[3]; Faestermann, T; Kruecken, R; Wirth, H -F ^[4]; Hertenberger, R ^[5]

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1. Dept. of Physics, University of Guelph, Guelph, ON (Canada)
2. Institut fuer Kernphysik, Universitaet zu Koeln (Germany)
3. Dept. of Physics and Astronomy, McMaster University, Hamilton, ON (Canada)
4. Physik Dept., Technische Universitaet Muenchen, Garching (Germany)
5. Fakultaet fuer Physik, Ludwig-Maximillians-Universitaet Muenchen, Garching (Germany)

The structures of {sub 3}{sup +} states in Os have been debated over several decades. Based on measured B(E2) values they were interpreted in {sup 186-192}Os as K{sup {pi}} = 4{sup +} two-phonon vibrations, whereas inelastic scattering, and (t,{alpha}) work imply a hexadecapole phonon description. To clarify the nature of these K{sup {pi}} = 4{sup +} bands in {sup 186,188}Os, we performed a ({sup 3}He,d) reaction on {sup 185,187}Re targets using 30 MeV {sup 3}He beams and a Q3D spectrograph. Absolute cross sections were obtained for excited states up to 3 MeV at 9 angles from 5 deg. to 50 deg. Results indicate a significant (5/2){sup +}[402]{sub {pi}}+(3/2){sup +}[402]{sub {pi}} component in agreement with quasiparticle phonon model predictions for a single hexadecapole phonon structure.

• OSTI ID: 21255437
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1090; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
EXCITED STATES
HELIUM 3 BEAMS
HELIUM 3 REACTIONS
INELASTIC SCATTERING
MEV RANGE 10-100
NUCLEAR STRUCTURE
OSMIUM 186
OSMIUM 187
OSMIUM 188
OSMIUM 189
OSMIUM 190
OSMIUM 191
OSMIUM 192
PHONONS
QUASIPARTICLE-PHONON MODEL
RAYLEIGH SCATTERING
RHENIUM 185
RHENIUM 187
SPECTROMETERS