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De-excitation from superdeformed bands in {sup 151}Tb and neighbouring A {approx} 150 nuclei

Abstract

Relative intensities of the yrast and the first excited superdeformed bands in {sup 151}Tb have been accurately measured, with the EUROGAM spectrometer. It is shown that the excited band depopulates at the same frequency and spin as its identical band in the isotone {sup 152}Dy whereas the yrast band deexcites at higher rotational frequency and spin even though it is much lower in excitation energy. A classification of superdeformed bands in the A {approx} 150 mass region indicates that the decay-out mechanism is strongly affected by neutron pairing correlations and the occupancy of high-N intruder orbitals. (author) 24 refs., 4 figs., 1 tab.
Authors:
Curien, D; France, G de; Beck, F A; Byrski, T; [1]  Beausang, C W; Clarke, S; Dagnall, P; [2]  Nyako, B M; [3]  Schueck, C; [4]  Simpson, J; [5]  EUROGAM Collaboration
  1. Strasbourg-1 Univ., 67 (France). Centre de Recherches Nucleaires
  2. Liverpool Univ. (United Kingdom). Oliver Lodge Lab.
  3. Magyar Tudomanyos Akademia, Debrecen (Hungary). Atommag Kutato Intezete
  4. Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse
  5. Daresbury Lab. (United Kingdom); and others
Publication Date:
Aug 03, 1993
Product Type:
Technical Report
Report Number:
CRN-93-37
Reference Number:
SCA: 663110; 663570; PA: AIX-25:035146; EDB-94:072318; NTS-94:020688; SN: 94001197357
Resource Relation:
Other Information: DN: Submitted to Physical Review Letters (US).; PBD: 3 Aug 1993
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; TERBIUM 151; DE-EXCITATION; NUCLEAR DEFORMATION; EXCITED STATES; PAIRING INTERACTIONS; SUPERDEFORMED NUCLEI; YRAST STATES; 663110; 663570; GENERAL AND AVERAGE PROPERTIES OF NUCLEI AND NUCLEAR ENERGY LEVELS; A = 150-189
OSTI ID:
10146431
Research Organizations:
Strasbourg-1 Univ., 67 (France). Centre de Recherches Nucleaires
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE94623905; TRN: FR9401957035146
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
FRN
Size:
17 p.
Announcement Date:
Jul 05, 2005

Citation Formats

Curien, D, France, G de, Beck, F A, Byrski, T, Beausang, C W, Clarke, S, Dagnall, P, Nyako, B M, Schueck, C, Simpson, J, and EUROGAM Collaboration. De-excitation from superdeformed bands in {sup 151}Tb and neighbouring A {approx} 150 nuclei. France: N. p., 1993. Web.
Curien, D, France, G de, Beck, F A, Byrski, T, Beausang, C W, Clarke, S, Dagnall, P, Nyako, B M, Schueck, C, Simpson, J, & EUROGAM Collaboration. De-excitation from superdeformed bands in {sup 151}Tb and neighbouring A {approx} 150 nuclei. France.
Curien, D, France, G de, Beck, F A, Byrski, T, Beausang, C W, Clarke, S, Dagnall, P, Nyako, B M, Schueck, C, Simpson, J, and EUROGAM Collaboration. 1993. "De-excitation from superdeformed bands in {sup 151}Tb and neighbouring A {approx} 150 nuclei." France.
@misc{etde_10146431,
title = {De-excitation from superdeformed bands in {sup 151}Tb and neighbouring A {approx} 150 nuclei}
author = {Curien, D, France, G de, Beck, F A, Byrski, T, Beausang, C W, Clarke, S, Dagnall, P, Nyako, B M, Schueck, C, Simpson, J, and EUROGAM Collaboration}
abstractNote = {Relative intensities of the yrast and the first excited superdeformed bands in {sup 151}Tb have been accurately measured, with the EUROGAM spectrometer. It is shown that the excited band depopulates at the same frequency and spin as its identical band in the isotone {sup 152}Dy whereas the yrast band deexcites at higher rotational frequency and spin even though it is much lower in excitation energy. A classification of superdeformed bands in the A {approx} 150 mass region indicates that the decay-out mechanism is strongly affected by neutron pairing correlations and the occupancy of high-N intruder orbitals. (author) 24 refs., 4 figs., 1 tab.}
place = {France}
year = {1993}
month = {Aug}
}