In the Surrogate Method, the measured decay probability of a compound nucleus formed via a direct reaction is used to extract the cross section for a reaction with a different entrance channel that proceeds through the same compound nucleus. An extension of the Surrogate Method, the Surrogate Ratio Method (SRM), uses a ratio of measured decay probabilities to infer an unknown cross section relative to a known one. To test the SRM we compare the direct-reaction-induced fission probability ratio of 234U(α, α’ f ) to 236U(α, αf ) with the ratio of cross sections of 233U(n, f ) to 235U(n, f ). These ratios were found to be in agreement over an equivalent neutron energy range of 0.4–18 MeV.

Document Type


Publication Date


Publisher Statement

Copyright © 2009 The American Physical Society. This article first appeared in Physical Review C 79, no. 4 (April 29, 2009): 044609: 1-44609: 7. doi:10.1103/PhysRevC.79.044609.

Please note that downloads of the article are for private/personal use only.

Included in

Nuclear Commons