DEPENDENCE OF THE In$sup 116$ ACTIVATION RATIO ON NEUTRON ENERGY
Indium was irradiated with monochromatic neutrons of various energies, and a measurement was made of the ratio of the 54-minute to the 13-second activities of In/sup 116/ produced by neutron capture in In/sup 115/. Such a ratio expresses the relative probability for populating the ground or the isomeric state from the initial compound state. The irradiations were made with monochromatic neutrons from a crystal spectrometer at the resonance energies 1.456 and 3.86 ev, in regions between resonances at 0.1 and 2.66 ev, and with "pile neutrons." The results show that the activation ratio differs for the two resonances by a factor of approximately 3.5, with relatively more of the 13- second activity being associated with the 3.86-ev resonance. The half-lives of the two In/sup 116/ activities were redetermined and the values 13.4 combination rat 0.4 seconds and 53.9 combination rat 0.2 minutes were obtained. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- NSA Number:
- NSA-14-020980
- OSTI ID:
- 4176342
- 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- Physical Review (U.S.) Superseded in part by Phys.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, Vol. Vol: 119; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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