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Title: GRID and multiphonon states

Abstract

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.

Authors:
Publication Date:
Research Org.:
Tennessee Technological Univ., Cookeville, TN (US)
Sponsoring Org.:
USDOE
OSTI Identifier:
20085585
DOE Contract Number:  
FG05-93ER40809; FG02-97ER41024
Resource Type:
Journal Article
Journal Name:
Journal of Research of the National Institute of Standards and Technology
Additional Journal Information:
Journal Volume: 105; Journal 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; Journal ID: ISSN 1044-677X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DOPPLER BROADENING; GAMMA SPECTROSCOPY; LIFETIME; DEFORMED NUCLEI; ENERGY LEVELS; EXCITATION; NUCLEAR STRUCTURE; CADMIUM 114; NEODYMIUM 144

Citation Formats

Robinson, S J. GRID and multiphonon states. United States: N. p., 2000. Web. doi:10.6028/jres.105.014.
Robinson, S J. GRID and multiphonon states. United States. doi:10.6028/jres.105.014.
Robinson, S J. Tue . "GRID and multiphonon states". United States. doi:10.6028/jres.105.014.
@article{osti_20085585,
title = {GRID and multiphonon states},
author = {Robinson, S J},
abstractNote = {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.},
doi = {10.6028/jres.105.014},
journal = {Journal of Research of the National Institute of Standards and Technology},
issn = {1044-677X},
number = 1,
volume = 105,
place = {United States},
year = {2000},
month = {2}
}