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Title: Effect of {gamma} Softness on the Stability of Chiral Geometry: Spectroscopy of {sup 106}Ag

Abstract

A study of the nucleus {sup 106}Ag has revealed the presence of two strongly coupled negative-parity rotational bands up to the 19{sup -} and 20{sup -} states, respectively, which cross each other at spin I{approx}14. The data suggest that near the crossover point the bands correspond to different shapes, which is different to the behavior expected from a pair of chiral bands. Inspection of the properties of these bands indicates a triaxial and a planar nature of rotation for the two structures. Possible causes for this may be understood in terms of a shape transformation resulting from the large degree of {gamma} softness of {sup 106}Ag. These data, along with the systematics of the odd-odd structures in the mass 100 region, suggest that {gamma} softness has marked implications for the phenomenon of nuclear chirality.

Authors:
;  [1];  [2];  [3];  [3];  [4];  [5];  [5];  [6];  [7]; ;  [3];  [6]
  1. Department of Physics, University of York, Heslington, YO10 5DD (United Kingdom)
  2. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
  3. Department of Physics and Astronomy, SUNY, Stony Brook, New York 11794-3800 (United States)
  4. (Japan)
  5. Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool, L69 7ZE (United Kingdom)
  6. (United States)
  7. (Bulgaria)
Publication Date:
OSTI Identifier:
20957718
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevLett.98.102501; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHIRALITY; MASS; PARITY; ROTATIONAL STATES; SILVER 106; SPECTROSCOPY; SPIN; TRANSFORMATIONS

Citation Formats

Joshi, P., Wadsworth, R., Carpenter, M. P., Fossan, D. B., Koike, T., Graduate School of Science, Tohoku University, Sendai, 980-8578, Paul, E. S., Rainovski, G., Department of Physics and Astronomy, SUNY, Stony Brook, New York 11794-3800, St. Kliment Ohridski University of Sofia, Sofia 1164, Starosta, K., Vaman, C., and NSCL, Michigan State University, 164 South Shaw Lane, East Lansing, Michigan 48824-1321. Effect of {gamma} Softness on the Stability of Chiral Geometry: Spectroscopy of {sup 106}Ag. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.102501.
Joshi, P., Wadsworth, R., Carpenter, M. P., Fossan, D. B., Koike, T., Graduate School of Science, Tohoku University, Sendai, 980-8578, Paul, E. S., Rainovski, G., Department of Physics and Astronomy, SUNY, Stony Brook, New York 11794-3800, St. Kliment Ohridski University of Sofia, Sofia 1164, Starosta, K., Vaman, C., & NSCL, Michigan State University, 164 South Shaw Lane, East Lansing, Michigan 48824-1321. Effect of {gamma} Softness on the Stability of Chiral Geometry: Spectroscopy of {sup 106}Ag. United States. doi:10.1103/PHYSREVLETT.98.102501.
Joshi, P., Wadsworth, R., Carpenter, M. P., Fossan, D. B., Koike, T., Graduate School of Science, Tohoku University, Sendai, 980-8578, Paul, E. S., Rainovski, G., Department of Physics and Astronomy, SUNY, Stony Brook, New York 11794-3800, St. Kliment Ohridski University of Sofia, Sofia 1164, Starosta, K., Vaman, C., and NSCL, Michigan State University, 164 South Shaw Lane, East Lansing, Michigan 48824-1321. Fri . "Effect of {gamma} Softness on the Stability of Chiral Geometry: Spectroscopy of {sup 106}Ag". United States. doi:10.1103/PHYSREVLETT.98.102501.
@article{osti_20957718,
title = {Effect of {gamma} Softness on the Stability of Chiral Geometry: Spectroscopy of {sup 106}Ag},
author = {Joshi, P. and Wadsworth, R. and Carpenter, M. P. and Fossan, D. B. and Koike, T. and Graduate School of Science, Tohoku University, Sendai, 980-8578 and Paul, E. S. and Rainovski, G. and Department of Physics and Astronomy, SUNY, Stony Brook, New York 11794-3800 and St. Kliment Ohridski University of Sofia, Sofia 1164 and Starosta, K. and Vaman, C. and NSCL, Michigan State University, 164 South Shaw Lane, East Lansing, Michigan 48824-1321},
abstractNote = {A study of the nucleus {sup 106}Ag has revealed the presence of two strongly coupled negative-parity rotational bands up to the 19{sup -} and 20{sup -} states, respectively, which cross each other at spin I{approx}14. The data suggest that near the crossover point the bands correspond to different shapes, which is different to the behavior expected from a pair of chiral bands. Inspection of the properties of these bands indicates a triaxial and a planar nature of rotation for the two structures. Possible causes for this may be understood in terms of a shape transformation resulting from the large degree of {gamma} softness of {sup 106}Ag. These data, along with the systematics of the odd-odd structures in the mass 100 region, suggest that {gamma} softness has marked implications for the phenomenon of nuclear chirality.},
doi = {10.1103/PHYSREVLETT.98.102501},
journal = {Physical Review Letters},
number = 10,
volume = 98,
place = {United States},
year = {Fri Mar 09 00:00:00 EST 2007},
month = {Fri Mar 09 00:00:00 EST 2007}
}