Identification of new negative-parity levels in 152,154Nd
Abstract
From an experiment with Gammasphere and a 252Cf spontaneous fission source, a new negative-parity band in 154Nd and new negative-parity levels in 152Nd were identified and the yrast bands were extended to 18+ in 154Nd and 20+ in 152Nd in a triple gamma coincidence study. These new negative-parity bands are consistent with octupole vibrational mode. There is a constant difference as a function of spin between the J1 values for the negative-parity band in 152Nd and J1 for the similar negative-parity band in 154Nd, however, their J2 values are essentially identical. These bands indicate a new kind of identical band.
- Publication:
-
Physical Review C
- Pub Date:
- April 1998
- DOI:
- 10.1103/PhysRevC.57.2040
- Bibcode:
- 1998PhRvC..57.2040Z
- Keywords:
-
- 23.20.Lv;
- 21.10.Re;
- 25.85.Ca;
- 27.70.+q;
- gamma transitions and level energies;
- Collective levels;
- Spontaneous fission;
- 150<
- =A<
- =189