THE RADIATIVE CAPTURE CROSS SECTION OF $sup 232$Th FOR NEUTRONS IN THE ENERGY RANGE 300 to 1200 keV
A determination of the (n, gamma ) cross section of Th/sup 232/ in the energy region 300 to 1200 kev was made by an activation method. A discrepancy existed between the level structure of this nucleus obtained directly from inelastic scattering measurements and the level structure deduced by Lane and Lynn in their interpretation of radiative capture cross section measurements. The energy dependence of the radiative capture cross section used by Lane and Lynn showed a plateau extending between the neutron energies of 250 and 650 kev followed by a sharp drop. Tbe present measurements show that this plateau actually extends up to about 900 kev so that the (n, gamma ) cross section is no longer inconsistent with the level structure of Th/sup 232/ deduced from inelastic scattering measurements. (auth)
- Research Organization:
- Atomic Weapons Research Establishment, Aldermaston, Berks, Eng.
- NSA Number:
- NSA-14-008125
- OSTI ID:
- 4171656
- Journal Information:
- Proc. Phys. Soc. (London), Journal Name: Proc. Phys. Soc. (London) Vol. Vol: 74
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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