Fission gamma spectra and levels in Ba-139 - art. no. 054306

Luo, YX Rasmussen, JO Ramayya, AV Hamilton, JH Zhang, XQ Hwang, JK Beyer, CJ Kormicki, J Ter-Akopian, GM Oganessian, YT Daniel, AV Gregorich, KE Ginter, TN Zielinski, P Folden, CM Lee, IY Fallon, P Macchiavelli, A Donangelo, R Stoyer, MA Asztalos, S Wu, SC

Yx. Luo et al., Fission gamma spectra and levels in Ba-139 - art. no. 054306, PHYS REV C, 6405(5), 2001, pp. 4306

11

INGLESE

Article

Physics

PHYSICAL REVIEW C

0556-2813 → ACNP

6405

5

2001

ISI

0556-2813(200111)6405:5<4306:FGSALI>2.0.ZU;2-L

Analysis of Cf-252 recent spontaneous-fission gamma data from Gammasphere h as enabled the discovery of transitions in Ba-139 in coincidence with those of its Molybdenum fission partner. A new level scheme going up to approxim ate to5 Mev includes 11 new transitions and 10 new levels. We make analogie s with the 83-neutron isotone Te-135 and discuss possible configurations in the spherical single-particle shell model. We suggest a band as a possible magnetic rotation band of the type treated by tilted-axis cranking theory.