Level structures in {sup 147}Pm from {sup 147}Nd decay
- Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prashanthinilayam 515134 (India)
- Department of Physics, Banaras Hindu University, Varanasi 221 005 (India)
The {gamma} and conversion electron spectra following the {beta} decay of {sup 147}Nd are measured using the HPGe detector and the miniorange electron spectrometer. The {sup 147}Pm level scheme comprising of 11 levels up to 686 keV excitation, interconnected by 29 transitions, is presented. The 649 keV (11) /(2) {sup {minus}} level, with six interconnecting (including two E3) transitions, is observed for the first time in decay studies. K-shell conversion coefficients for four transitions and L-shell conversion coefficients for five transitions are being reported for the first time. The I{sup {pi}}= (7) /(2) {sup +} spin-parity assignment for the 680 keV level is confirmed. Specific structure features of the {sup 147}Pm level scheme, depicting the unique coexistence of spherical shell model configurations, particle-phonon coupled multiplets, evolution of octupole collectivity, and well-developed rotational bands, are discussed; certain open questions about the spectroscopy and interpretation of the 633 and the 641 keV levels are highlighted. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 545022
- Journal Information:
- Physical Review, C, Vol. 56, Issue 5; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Level structure of the odd mass Pr isotopes. III. Levels of [sup 147]Pr[sub 88] populated in the beta decay of 56-s [sup 147]Ce
Search for reflection asymmetry in medium-mass nuclei: a study of the structure of /sup 145/Ba, /sup 147/Ce, /sup 143/Ba, and /sup 139/Xe