THE DECAY OF Er$sup 171$ AND Er$sup 16$$sup 5$
The gamma spectrum of a neutron-activated probe of natural Er/sub 2/O/ sub 3/ revealed an additional peak at 55 kev, which was attributed to the characteristic K x ray from the decay of Er/sup 165/ by measurement of its half life in a NaI crystal. The activation cross section for thermal reactor neutrons for Er/sup 164/(n, gamma )Er/sup 165/ was determined to be sigma /sub A/ = 20 plus or minus 7 bar n. The averaged conversion coefficient of the 111, 116, and 124 kev gamma rays from Er/sup 171/ yields Tm/sup 171/ was remeasured with scintillation counter equipment. (auth)
- Research Organization:
- Universitat, Gottingen, Ger.
- NSA Number:
- NSA-17-034981
- OSTI ID:
- 4674759
- Journal Information:
- Z. Physik, Journal Name: Z. Physik Journal Issue: 1 Vol. Vol: 175; ISSN 1434-6001
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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