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Title: Octupole collectivity in the Sm isotopes

Abstract

Microscopic models suggest the occurrence of strong octupole correlations in nuclei with N{approx_equal}88. To examine the signatures of octupole correlations in this region, the spdf interacting boson approximation model is applied to Sm isotopes with N=86-92. The effects of including multiple negative-parity bosons in this basis are compared with more standard one negative-parity boson calculations and are analyzed in terms of signatures for strong octupole correlations. It is found that multiple negative-parity bosons are needed to describe properties at medium spin. Bands with strong octupole correlations (multiple negative-parity bosons) become yrast at medium spin in {sup 148,150}Sm. This region shares some similarities with the light actinides, where strong octupole correlations were also found at medium spin.

Authors:
 [1];  [2];  [1];  [3];  [4];  [1];  [5]
  1. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124 (United States)
  2. (Germany)
  3. (Romania)
  4. Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520-8120 (United States)
  5. Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
20771079
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.064302; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACTINIDES; APPROXIMATIONS; CORRELATIONS; DEFORMED NUCLEI; INTERACTING BOSON MODEL; OCTUPOLES; PARITY; SAMARIUM 150; SPIN; YRAST STATES

Citation Formats

Babilon, M., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt, Zamfir, N.V., National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Kusnezov, D., McCutchan, E.A., and Zilges, A. Octupole collectivity in the Sm isotopes. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.72.064302.
Babilon, M., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt, Zamfir, N.V., National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Kusnezov, D., McCutchan, E.A., & Zilges, A. Octupole collectivity in the Sm isotopes. United States. doi:10.1103/PhysRevC.72.064302.
Babilon, M., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt, Zamfir, N.V., National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Kusnezov, D., McCutchan, E.A., and Zilges, A. Thu . "Octupole collectivity in the Sm isotopes". United States. doi:10.1103/PhysRevC.72.064302.
@article{osti_20771079,
title = {Octupole collectivity in the Sm isotopes},
author = {Babilon, M. and Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt and Zamfir, N.V. and National Institute for Physics and Nuclear Engineering, Bucharest-Magurele and Kusnezov, D. and McCutchan, E.A. and Zilges, A.},
abstractNote = {Microscopic models suggest the occurrence of strong octupole correlations in nuclei with N{approx_equal}88. To examine the signatures of octupole correlations in this region, the spdf interacting boson approximation model is applied to Sm isotopes with N=86-92. The effects of including multiple negative-parity bosons in this basis are compared with more standard one negative-parity boson calculations and are analyzed in terms of signatures for strong octupole correlations. It is found that multiple negative-parity bosons are needed to describe properties at medium spin. Bands with strong octupole correlations (multiple negative-parity bosons) become yrast at medium spin in {sup 148,150}Sm. This region shares some similarities with the light actinides, where strong octupole correlations were also found at medium spin.},
doi = {10.1103/PhysRevC.72.064302},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}