THE EFFECT OF QUADRUPOLE VIBRATIONS ON L-FORBIDDEN M1 TRANSITIONS,
Abstract
The effect of quadrupole vibrations on l-for bidden M1 transitions is computed using the wave functions resulting from the shell model with a residual pairing pulse P(2) force. These wave functions for low states of an odd nucleus are a linear combination of a spin j quasi-particle and spin j' quasi-particles coupled to 2 phonons to angular momentum j. The one-phonon components of the wave functions allow l-forbidden M1 tran sions to proceed both via the single particle and collective M1 operators. The calculation shows that the quadrupole coupling can explain most of the observed transition rate in a number of cases, while in a few cases, particularly for the odd-N nuclei fast transitions occur which are still unexplained. In addition, it is shown that the E2 contribution to these transitions while expected to be enhanced to several times single particle in most cases, nevertheless usually makes only a very small contribution to the total rate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 19, 1963
- Accession Number
- AD0412695
Entities
People
- Raymond A. Sorensen
Organizations
- Carnegie Institute of Technology