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Title: New shape minimum in {sup 160}Yb: Evidence for a triaxial, strongly deformed band

Abstract

A high-spin rotational band was observed in the N=90 nucleus {sup 160}Yb with moment of inertia and decay characteristics very similar to recently discovered sequences in {sup 157,158}Er. These latter structures were discussed in terms of strongly deformed triaxial bands. Detailed cranked Nilsson-Strutinsky calculations were performed that predict that well-deformed triaxial structures are also expected at high spin in {sup 160}Yb. Within this interpretation the observed discontinuity in the dynamic moment of inertia around ({Dirac_h}/2{pi}){omega}=0.40-0.45 MeV can be explained as a crossing between i{sub 13/2} neutron levels.

Authors:
; ; ; ; ;  [1];  [2];  [3];  [4]; ; ; ; ;  [5];  [6]
  1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
  2. STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD (United Kingdom)
  3. Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402 (United States)
  4. Nuclear Engineering Division and Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  5. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  6. Department of Mathematical Physics, Lund Institute of Technology, P. O. Box 118, S-22100 Lund (Sweden)
Publication Date:
OSTI Identifier:
21068100
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 77; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevC.77.021302; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CRANKING MODEL; ERBIUM 157; ERBIUM 158; MEV RANGE; MOMENT OF INERTIA; NEUTRONS; NUCLEAR DECAY; NUCLEAR STRUCTURE; ROTATIONAL STATES; SPIN; YTTERBIUM 160

Citation Formats

Aguilar, A, Campbell, D B, Chandler, K, Pipidis, A, Riley, M A, Teal, C, Simpson, J, Hartley, D J, Kondev, F G, Clark, R M, Cromaz, M, Fallon, P, Lee, I Y, Macchiavelli, A O, and Ragnarsson, I. New shape minimum in {sup 160}Yb: Evidence for a triaxial, strongly deformed band. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.77.021302.
Aguilar, A, Campbell, D B, Chandler, K, Pipidis, A, Riley, M A, Teal, C, Simpson, J, Hartley, D J, Kondev, F G, Clark, R M, Cromaz, M, Fallon, P, Lee, I Y, Macchiavelli, A O, & Ragnarsson, I. New shape minimum in {sup 160}Yb: Evidence for a triaxial, strongly deformed band. United States. https://doi.org/10.1103/PHYSREVC.77.021302
Aguilar, A, Campbell, D B, Chandler, K, Pipidis, A, Riley, M A, Teal, C, Simpson, J, Hartley, D J, Kondev, F G, Clark, R M, Cromaz, M, Fallon, P, Lee, I Y, Macchiavelli, A O, and Ragnarsson, I. Fri . "New shape minimum in {sup 160}Yb: Evidence for a triaxial, strongly deformed band". United States. https://doi.org/10.1103/PHYSREVC.77.021302.
@article{osti_21068100,
title = {New shape minimum in {sup 160}Yb: Evidence for a triaxial, strongly deformed band},
author = {Aguilar, A and Campbell, D B and Chandler, K and Pipidis, A and Riley, M A and Teal, C and Simpson, J and Hartley, D J and Kondev, F G and Clark, R M and Cromaz, M and Fallon, P and Lee, I Y and Macchiavelli, A O and Ragnarsson, I},
abstractNote = {A high-spin rotational band was observed in the N=90 nucleus {sup 160}Yb with moment of inertia and decay characteristics very similar to recently discovered sequences in {sup 157,158}Er. These latter structures were discussed in terms of strongly deformed triaxial bands. Detailed cranked Nilsson-Strutinsky calculations were performed that predict that well-deformed triaxial structures are also expected at high spin in {sup 160}Yb. Within this interpretation the observed discontinuity in the dynamic moment of inertia around ({Dirac_h}/2{pi}){omega}=0.40-0.45 MeV can be explained as a crossing between i{sub 13/2} neutron levels.},
doi = {10.1103/PHYSREVC.77.021302},
url = {https://www.osti.gov/biblio/21068100}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 2,
volume = 77,
place = {United States},
year = {2008},
month = {2}
}