GRID and multiphonon states
The development of the GRID technique for determining nuclear level lifetimes of excited low-spin states populated in thermal neutron capture reactions has resulted in the ability to perform detailed studies of proposed multiphonon excitations for the first time. This paper discusses the experimental evidence for multiphonon excitations determined using the GRID technique. In deformed nuclei several good examples of {gamma}{gamma} K{sup {pi}} = 4{sup +} excitations have been established, whereas the experimental evidence gathered on K{sup {pi}} = 0{sup +} bands is contradictory, and any interpretations will likely involve the mixing of several different configurations. In vibrational nuclei the GRID technique has helped to establish the existence of multiple quadrupole phonon excitations in {sup 114}Cd, and an almost complete set of quadrupole-octupole coupled states in {sup 144}Nd.
- Research Organization:
- Tennessee Technological Univ., Cookeville, TN (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG05-93ER40809; FG02-97ER41024
- OSTI ID:
- 20085585
- 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
Evidence for the existence of two-phonon collective excitations in deformed nuclei
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journal | February 1991 |
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