Deducing the ²³⁷U(n,f) Cross Section Using the Surrogate Ratio Method

Authors

J. T. Burke
L. A. Bernstein
J. Escher
L. Ahle
J. A. Church
F. S. Dietrich
K. Moody
E. B. Norman
L. Phair
P. Fallon
R. M. Clark
M. A. Deleplanque
M. Descovich
M. Cromaz
I. Y. Lee
A. O. Macchiavelli
M. A. McMahan
E. Rodriguez-Vieitez
F. S. Stephens
H. Ai
C. Plettner
C. W. Beausang, University of RichmondFollow
B. Crider

DOI

10.1103/PhysRevC.73.054604

Abstract

We have deduced the cross section for ²³⁷U(n, f) over an equivalent neutron energy range from 0 to 20 MeV using the surrogate ratio method. A 55 MeV⁴He beam from the 88 inch cyclotron at Lawrence Berkeley National Laboratory was used to induce fission in the following reactions: ²³⁸U(α, α^f) and ²³⁶U(α, α^f). The ²³⁸U reaction was a surrogate for ²³⁷U(n, f), and the ²³⁶U reaction was used as a surrogate for ²³⁵U(n, f). Scattered α particles were detected in a fully depleted segmented silicon telescope array over an angle range of 35° to 60° with respect to the beam axis. The fission fragments were detected in a third independent silicon detector located at backward angles between 106° and 131°.

Document Type

Article

Publication Date

5-5-2006

Publisher Statement

Copyright © 2006 The American Physical Society. This article first appeared in Physical Review C 73, no. 5 (May 5, 2006): 054604:1-54604:8. doi:10.1103/PhysRevC.73.054604.

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

Recommended Citation

Burke, J., L. Bernstein, J. Escher, L. Ahle, J. Church, F. Dietrich, K. Moody, E. Norman, L. Phair, P. Fallon, R. Clark, M. Deleplanque, M. Descovich, M. Cromaz, I. Lee, A. Macchiavelli, M. Mcmahan, L. Moretto, E. Rodriguez-Vieitez, F. Stephens, H. Ai, C. Plettner, C. Beausang, and B. Crider. "Deducing the U237(n,f) Cross Section Using the Surrogate Ratio Method." Physical Review C 73, no. 5 (May 5, 2006): 054604:1-54604:8. doi:10.1103/PhysRevC.73.054604.