GAMMA-RAY THRESHOLD METHOD AND THE O$sup 18$(d,n$gamma$)F$sup 19$ REACTION
A neutron threshold technique involving observations of the gamma rays from the de-excitation of the residual excited states is described. A study of the O/sup 18/(d,n gamma F/sup 19/ reaction with this technique has resulted in the observation of neutron thresholds at bombarding energies of 346 plus or minus 8, 525 plus or minus 8, and 584 plus or minus 10 kev. These thresholds correspond to states at 6.048 plus or minus 0.014, 6.210 plus or minus 0.014, and 6.262 plus or minus 0.015 Mev in the F/sup 19/ nucleus, respectively. A detailed gamma-ray spectrum was obtained at a bombarding energy of 1.OO Mev using a single-crystal spectrometer, and another detailed spectrum was obtained at 1.40 Mev using a three-crystal pair spectrometer. Coincidence measurements were made for several of the cascade gamma rays. (auth)
- Research Organization:
- U.S. Naval Research Lab., Washington
- NSA Number:
- NSA-13-002476
- OSTI ID:
- 4277611
- 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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 112; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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