Analysis of magnetic dipole transitions between sd-shell states

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.1382· OSTI ID:6951459

Etchegoyen, M C; Etchegoyen, A; Wildenthal, B H; Brown, B A

Experimental values of magnetic dipole transition strengths between states of sd-shell (A = 17--39) nuclei are analyzed with one-body transition densities from complete-space 0d/sub 5/2/-1s/sub 1/2/-0d/sub 3/2/ shell-model wave functions in order to extract empirical values for the higher-order corrections to the model M1 operator. These corrections, or renormalizations, are obtained in terms of the values of the effective single-particle matrix elements which, when combined with the model transition densities, yield a minimum deviation of the model predictions for M1 strengths from a set of selected experimental values. A total of 250 experimental data are investigated. Confirmation that the particular realizations of shell-model wave functions employed in the analysis of the data yield adequate descriptions of the actual nuclear states, and that the set of experimental data provides a thorough and accurate sampling of the relevant phenomena, are prerequisites to obtaining meaningful results from this procedure. These issues are studied with a variety of tests of the internal consistency of the procedures used.

• Research Organization: Physics Department, Drexel University, Philadelphia, Pennsylvania 19104
• OSTI ID: 6951459
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ENERGY-LEVEL TRANSITIONS
FUNCTIONS
GAMOW-TELLER RULES
ISOSPIN
M1-TRANSITIONS
MAGNETIC MOMENTS
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MATRIX ELEMENTS
MULTIPOLE TRANSITIONS
NUCLEAR MODELS
NUCLEAR STRUCTURE
PARTICLE MODELS
PARTICLE PROPERTIES
RENORMALIZATION
SHELL MODELS
SINGLE-PARTICLE MODEL
WAVE FUNCTIONS