ISOMER RATIO FOR THE Sn$sup 118$$($$gamma$,p) REACTION
The relative yields of In/sup 117/ and In/sup 117//sup m/ from the Sn/ sup 118/( gamma ,p) reaction were measured by gamma ray counting a sample of SnO/ sub 2/ enriched in Sn/sup 118/ that had been irradiated with 24-Mev bremsstrahlung. The measured ground to isomer yield ratio was 0.65 plus or minus 0.15, and is consistent with predictions made on the basis of both the Wilkinson direct mechanism and the compound-nucleus mechanism. However, the values of the isomer ratios for the series of even-even tin isotopes (Sn/sup 118/ , Sn/sup 120/, Sn/sup 122/, and Sn/sup 1/ /sup 24/, the latter three from the work of Yuta and Morinaga) are not at all consistent with the predictions of the compound-nucleus mechanism but can be rationalized on the basis of the Wilkinson model, lending support for that theory for direct photoproton reactions. (auth)
- Research Organization:
- Univ. of Illinois, Urbana
- NSA Number:
- NSA-15-026969
- OSTI ID:
- 4843928
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 123; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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