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First Low Temperature Measurement Of The Giant Dipole Resonance Width In Sn

AIP Conf. Proc. -- March 3, 2003 -- Volume 656, pp. 113-120
FRONTIERS OF NUCLEAR STRUCTURE; doi:10.1063/1.1556631

Issue Date: 3 March 2003

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P. Heckman,*,[dagger] D. Bazin,* J. R. Beene,** Y. Blumenfeld,*,[double-dagger] M. J. Chromik,*,§ M. L. Halbert,** J. F. Liang,** E. Mohrmann, T. Nakamura,*,|| A. Navin,*,[dagger][dagger] B. M. Sherrill,*,[dagger] K. A. Snover, M. Thoennessen,*,[dagger] E. Tryggestad,*,[dagger] and R. L. Varner**
*National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824
[dagger]Department of Physics & Astronomy, Michigan State University, East Lansing, Michigan 48824
**Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, TN 37831
[double-dagger]IPN, IN2P3-CNRS, 91406 Orsay Cedex, France
§Ludwig Maximilian Universität München, 85748 Garching, Germany
Nuclear Physics Laboratory, P. O. Box 354290, University of Washington, Seattle, WA 98195
||Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551 Japan
[dagger][dagger]Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India

The width of the Giant Dipole Resonance in Sn was studied by means of inelastic scattering. This study allowed for the first measurement of the GDR width at a temperature of 1 MeV. The width was found to be 4±1 MeV, and is consistent with the ground state measurement. This result is in disagreement with adiabatic thermal shape fluctuation calculations, indicating an overestimation of the influence of thermal shape fluctuations at low temperature. ©2003 American Institute of Physics
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KEYWORDS and PACS

Keywords
PACS
  • 24.30.Cz
    Nuclear giant resonances
  • 25.70.Ef
    Resonances in heavy-ion reactions
  • 27.60.+j
    Properties of nuclei with 90 <= A 149
  • YEAR: 2003

PUBLICATION DATA

ISSN:
0094-243X (print)  
Publisher:
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