Sub-nanosecond lifetime measurement using the recoil-distance method
The electromagnetic properties of low-lying nuclear states are a sensitive probe of both collective and single-particle degrees of freedom in nuclear structure. The recoil-distance technique provides a very reliable, direct and precise method for measuring lifetimes of nuclear states with lifetimes ranging from less than one to several hundred picoseconds. This method complements the powerful, but complicated, heavy-ion induced Coulomb excitation technique for measuring electromagnetic properties. The recoil distance technique has been combined with heavy-ion induced Coulomb excitation to study a variety of problems. Examples discussed are: study of the two-phonon triplet in {sup 110}Pd, coupling of the {beta} and {gamma} degrees of freedom in {sup 182,184}W, highly deformed {gamma} bands in {sup 165}Ho, octupole collectivity in {sup 96}Zr, and opposite parity states in {sup 153}Eu. Consistency between the Coulomb excitation results and the lifetime measurements confirms the reliability of the complex analysis often encountered in heavy-ion induced Coulomb excitation work.
- Research Organization:
- Univ. of Rochester, NY (US)
- OSTI ID:
- 20085579
- Journal Information:
- Journal of Research of the National Institute of Standards and Technology, Vol. 105, Issue 1; Conference: Applications of High-Precision {gamma}-Spectroscopy, Notre Dame, IN (US), 07/01/1998--07/03/1998; Other Information: PBD: Jan-Feb 2000; ISSN 1044-677X
- Country of Publication:
- United States
- Language:
- English
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