Deducing the {sup 237}U(n,f) cross section using the surrogate ratio method
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
We have deduced the cross section for {sup 237}U(n,f) over an equivalent neutron energy range from 0 to 20 MeV using the surrogate ratio method. A 55 MeV {sup 4}He beam from the 88 inch cyclotron at Lawrence Berkeley National Laboratory was used to induce fission in the following reactions: {sup 238}U({alpha},{alpha}{sup '}f) and {sup 236}U({alpha},{alpha}{sup '}f). The {sup 238}U reaction was a surrogate for {sup 237}U(n,f), and the {sup 236}U reaction was used as a surrogate for {sup 235}U(n,f). Scattered {alpha} particles were detected in a fully depleted segmented silicon telescope array over an angle range of 35 deg. to 60 deg. with respect to the beam axis. The fission fragments were detected in a third independent silicon detector located at backward angles between 106 deg. and 131 deg.
- OSTI ID:
- 20771541
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevC.73.054604; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Deducing the 237U(n,f) cross-section using the Surrogate Ratio Method
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