Lifetime measurements of scissors mode excitations in {sup 162,164}Dy
- University of Kentucky, Lexington, Kentucky 40506-0055 (United States)
The inelastic neutron scattering reaction has been used to populate known 1{sup +} scissors mode states in the deformed rare-earth nuclei {sup 162}Dy and {sup 164}Dy. The electromagnetic decay properties of these states have been examined and the Doppler-shift attenuation method has been used to measure directly the lifetimes of these states. The {ital M}1 strengths determined are in general agreement with those measured previously in nuclear resonance fluorescence experiments and support the conclusion that these are collective structures; however, a significant discrepancy is found for three states near 3.1 MeV in {sup 164}Dy. Candidates for 2{sup +} rotational band members have been identified, and a previously suggested {gamma}-ray branch from a spin-1 state to the {gamma} vibration in {sup 164}Dy has been observed.
- OSTI ID:
- 122372
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 52; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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