ISSN:
1434-601X
Keywords:
PACS:23.20.-g Electromagnetic transitions – 21.60.Jz Hartree-Fock and random-physe approximations – 27.90.+b 220 ≤ A
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The electron-capture decay of 228Pa to levels in 228Th was studied using mass-separated sources and a γ-ray detection system consisting of five Compton-suppressed Ge detectors. A total of 87 levels were observed up to an excitation energy of 2 MeV which are connected by approximately 500 γ-ray transitions. The complete octupole quadruplet, three excited K π=0+ bands and two K π=2+ bands were identified below 1.4 MeV. The observed level structure is compared to calculations within the quasiparticle-phonon nuclear model. The surprisingly good agreement indicates that 228Th has less transitional character than hitherto assumed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100500050146
