Measurement of the Mean Life of the 4.49-MeV (5-) State of 40Ca. Effects of Deformed Components on the Lifetimes of the Odd-Parity States
Abstract
We have measured a mean life of 392 +/- 12 psec for the 4.49-MeV (5-) state of 40Ca, corresponding to an E2 transition strength of 1.04 +/- 0.03 Weisskopf units which is considerably stronger than that predicted by a one-particle, one-hole description of the states. However, this E2 decay rate and those of eight other E2 transitions between odd-parity states can be understood when the states are described as admixtures of deformed and spherical wave functions.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1969
- DOI:
- 10.1103/PhysRevLett.23.594
- Bibcode:
- 1969PhRvL..23..594M