EFFECTIVE CADMIUM CUTOFF ENERGIES
Effective cutoff energies for point 1/v absorbers inside of spherical and cylindrical cadmium filters were calculated for thermal reactor neutrons. The neutron spectrum was assumed to consist of a Maxwellian plus a 1/E component, and the parameters varied with the thickness of filter, the Maxwellian temperature, and the Maxwellian to 1/E flux ratio. Because of the sensitivity of the effective cutoff to Maxwellian flux parameters for thin filters it is recommended that filter thickinesses of about 40 mils be usef. Forty-mil filters show effective cutoffs at about 0.50 to 0.55 ev for temperatures up to about 500 deg A (or about 0.045 ev). Effective cutoff energies for boron filters were also calculated for purposes of comparison. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- NSA Number:
- NSA-14-005856
- OSTI ID:
- 4213673
- Journal Information:
- Nuclear Sci. and Eng., Vol. Vol: 6; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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ABSORPTION- CADMIUM- CYLINDERS- ENERGY- FILTERS- REACTORS- SPHERES- THERMAL NEUTRONS
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ABSORPTION- CADMIUM- ENERGY- FILTERS- REACTORS- THERMAL NEUTRONS- THICKNESS