Level spin and moments of inertia in superdeformed nuclei near A = 194

Conference · Sun Apr 01 00:00:00 EST 1990

OSTI ID:6847781

Becker, J A; Roy, N; Henry, E A; Yates, S W; Kuhnert, A ^[1]; Draper, J E; Korten, W; Beausang, C W; Deleplanque, M A; Diamond, R M; Stephens, F S; Kelly, W H; Azaiez, F ^[2]; Cizewski, J A; Brinkman, M J ^[3]

---

1. Lawrence Livermore National Lab., CA (USA)
2. Lawrence Berkeley Lab., CA (USA)
3. Rutgers--the State Univ., New Brunswick, NJ (USA)

Experimental transition energies in the superdeformed (SD) bands near A = 190 are least-squares fit to rotational model formulae in order to extract level spin. The data set includes 16 SD bands, which show no evidence of either irregular behavior near the bottom of the bands or abrupt angular momentum alignment at low {Dirac h}{omega}. The 9 transitions lowest in energy in each band are well described by the formulae. The fitted spin of the final state in the {gamma}-ray cascade is within {plus minus}0.1{Dirac h} of an integer or half-odd integer for 13 of the bands. The weight of the evidence suggests that meaningful level spins corresponding to these transitions can be inferred. The moment of inertia at {omega} = 0 is correlated, with I = 88.3(5){Dirac h}{sup 2}/MeV and I = 93.4(5){Dirac h}{sup 2}/MeV for the strong and weak bands, respectively. 19 refs., 2 figs., 2 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/ER; National Science Foundation (NSF)
• DOE Contract Number: AC03-76SF00098; W-7405-ENG-48
• OSTI ID: 6847781
• Report Number(s): UCRL-103001; CONF-900450-6; ON: DE90013477; TRN: 90-020815
• Resource Relation: Conference: Nuclear structure in the '90's, Oak Ridge, TN (USA), 23-27 Apr 1990
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEFORMED NUCLEI
MOMENT OF INERTIA
ANGULAR MOMENTUM
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
LEAD ISOTOPES
MERCURY ISOTOPES
NUCLEAR STRUCTURE
SPIN
THALLIUM ISOTOPES
DATA
INFORMATION
ISOTOPES
NUCLEI
NUMERICAL DATA
PARTICLE PROPERTIES
651920* - Nuclear Properties & Reactions
A=190-219
Experimental