A study of 123Sb levels populated in the beta decay of the high spin isomer of 123Sn

✍ Scribed by R.L. Auble; W.H. Kelly

• Publisher: Elsevier Science
• Year: 1966
• Weight: 318 KB
• Volume: 81
• Category: Article
• ISSN: 0029-5582
• DOI: 10.1016/s0029-5582(66)80035-4

✦ Synopsis

Several nuclear energy levels in l~aSb populated by the fl-decay of 125 d ao-aSn have been examined. The presence of two states at 1032 and 1089 keV was deduced from studies utilizing a Ge(Li) gamma-ray spectrometer and a third state, at 1187 keV, has been proposed on the basis of gamma-ray coincidence measurements. The fl-spectrum to the 1089 keV state was studied by means of a 4z~ plastic scintillator operating in coincidence with a NaI(TI) gammaray spectrometer..A Fermi-Kurie plot of the spectrum was found to be linear indicating that the transition is either allowed or non-unique first forbidden. The logft value of 9.0 found for this transition tends to support the latter assignment.

E I RADIOACTIVlTY12aSn [fr°m~2Sn(n'y)l;measuredEr'l~'E#'l#'YY'flY" I

x23Sb deduced levels. Enriched target.