Gamma-ray decay schemes for ⁹³Kr, ⁹³Rb, and ⁹³Sr

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/4072954· OSTI ID:4072954

Bischof, Charles Jacob ^[1]

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1. Iowa State Univ., Ames, IA (United States)

A study of the gamma-ray de-excitation following the beta decays of ⁹³Kr, ⁹³Rb, and ⁹³Sr using the TRISTAN on-line separator facility is reported. Gamma-ray singles and gamma-gamma coincidence measurements were made using Ge(Li) detectors. Of the 162 gamma rays observed in the decay of ⁹³Sr, 143, representing more than 99 percent of the total gamma-ray intensity observed, were placed in a level scheme containing 36 levels. For the decay of ⁹³Rb, 243 gamma rays were observed, of which 231 are placed in a level scheme consisting of 74 levels. This again represents a placement of over 99 percent of the total gamma-ray intensity measured. In the case of the ⁹³Kr decay approximately 98.5 percent of the observed gamma-ray intensity has been accounted for by the proposed level scheme. This results from the placement of 203 of the 217 gamma rays assigned to this decay in a level scheme comprising 56 levels. Beta-branching for these decays were determined from transition intensity balances. Spin and parity assignments were proposed, whenever possible, on the basis of gamma-ray transition probabilities and deduced log ft values. A comparison is made with the available reaction data for the ⁹³Y level scheme. In all cases an attempt has been made to explain some of the levels in terms of the nuclear shell model and decay systematics.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: W-7405-ENG-82
• NSA Number: NSA-33-021660
• OSTI ID: 4072954
• Report Number(s): IS-T--707
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ENERGY LEVELS
FT VALUE
KRYPTON 93-- RUBIDIUM 93
PARITY
RUBIDIUM 93-- STRONTIUM 93
SHELL MODELS
SPIN STRONTIUM 93-- YTTRIUM 93