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Photon scattering experiments in the rare earth region−a new approach to low lying dipole modes

 

作者: P. von Brentano,   A. Zilges,   R. Jolos,   A. Richter,   R. D. Heil,   U. Kneissl,   H. H. Pitz,   C. Wesselborg,  

 

期刊: AIP Conference Proceedings  （AIP Available online 1991）
卷期: Volume 238, issue 1  

页码: 234-243

 

ISSN:0094-243X

 

年代: 1991

 

DOI:10.1063/1.41271

 

出版商: AIP

 

数据来源: AIP

 

摘要:

High resolution Nuclear Resonance Fluorescence (NRF) experiments have been carried out to study low lying dipole excitations in rare earth nuclei. In particular, we identified the so called M1 scissors mode near 3 MeV excitation energy. At the same time we found some E1 transitions with strengths up to several mWu. The inspection of the measured decay branching ratios suggests K‐mixing for a few states while giving overall evidence for a good K‐quantum number at 3 MeV.

 

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