Relative spins and excitation energies of superdeformed bands in {sup 190}Hg: Further evidence for octupole vibration

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.R1599· OSTI ID:26056

Crowell, B; Carpenter, M; Janssens, R; Blumenthal, D ^[1]; Timar, J; Wilson, A ^[2]; Sharpey-Schafer, J ^[2]; Nakatsukasa, T ^[3]; Ahmad, I ^[4]; Astier, A ^[5]; Azaiez, F ^[6]; du Croux, L ^[5]; Gall, B ^[7]; Hannachi, F ^[8]; Khoo, T ^[1]; Korichi, A ^[6]; Lauritsen, T ^[1]; Lopez-Martens, A

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. University of Liverpool, Liverpool L69 3BX (United Kingdom)
3. AECL Research, Chalk River Laboratories, Chalk River, Ontario, K0J 1J0 (Canada)
4. Argonne National Labortory, Argonne, Illinois 60439 (United States)
5. Institut de Physique Nucleaire Lyon, Institut National de Physique Nucleaire et de Physique des Particules, Centre National de la Recherche Scientifique, Lyon, F-69622 Villeurbanne (France)
6. Institut de Physique Nucleaire, Institut National de Physique Nucleaire et de Physique des Particules, Centre National de la Recherche Scientifique, batiment 104-108, F-91405 Orsay Cedex (France)
7. Centre de Recherches Nucleaires, F-67037 Strasbourg Cedex (France)
8. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Institut National de Physique Nucleaire et de Physique des Particules, Centre National de la Recherche Scientifique, batiment 104, F-91406 Orsay Cedex (France)

An experiment using the Eurogam phase II {gamma}-ray spectrometer confirms the existence of an excited superdeformed (SD) band in {sup 190}Hg and its very unusual decay into the lowest SD band over 3--4 transitions. The energies of the transitions linking the two SD bands have been firmly established, and their angular distributions are consistent with a dipole character. Comparisons with calculations using random-phase approximation indicate that the excited SD band can be interpreted as an octupole-vibrational structure.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 26056
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 51; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
DEFORMED NUCLEI
DIPOLES
EXCITATION
GAMMA SPECTROMETERS
MERCURY 190
OCTUPOLES
SPIN