Level schemes of $sup 91$Rb and $sup 91$Sr populated in beta decay

Journal Article · Thu Apr 01 04:00:00 EST 1976 · Phys. Rev., C, v. 13, no. 4, pp. 1630-1643

OSTI ID:4011765

Glascock, M D; Talbert, Jr, W L; Duke, C L

The decays of mass-separated $sup 91$Kr and $sup 91$Rb have been studied using $gamma$-ray singles and coincidence techniques. From the decay of $sup 91$Kr, a level scheme is proposed for $sup 91$Rb consisting of 60 excited states and accommodating 218 of the 220 observed transitions. The half-life of the 108.8-keV level of $sup 91$Rb has been determined to be 0.8 +- 0.3 nsec by delayed coincidence techniques. From the decay of $sup 91$Rb, 109 of the 125 observed transitions are placed in a level scheme for $sup 91$Sr containing 37 excited states. The half-life of the 93.6-keV level in $sup 91$Sr has been measured to be 87.4 +- 3.0 nsec. Ground-state $beta$ branching has been determined to be 10 +- 4% and 7 +- 5% for the decays of $sup 91$Kr and $sup 91$Rb, respectively. Some spin-parity assignments are made, and a shell-model interpretation is suggested for some of the levels. (AIP)

• Research Organization: Ames Laboratory-ERDA and Department of Physics, Iowa State University, Ames, Iowa 50011
• NSA Number: NSA-33-031825
• OSTI ID: 4011765
• Journal Information: Phys. Rev., C, v. 13, no. 4, pp. 1630-1643, Journal Name: Phys. Rev., C, v. 13, no. 4, pp. 1630-1643; ISSN PRVCA
• Country of Publication: United States
• Language: English

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