Benchmarking the External Surrogate Ratio Method using the (alpha,alpha' f) reaction at STARS
Abstract
We measured the ratio of the fission probabilities of {sup 234}U* relative to {sup 236}U* formed via an ({alpha},{alpha}{prime}) direct reactions using the STARS array at the 88-inch cyclotron at the Lawrence Berkeley National Laboratory. This ratio has a shape similar to the ratio of neutron capture probabilities from {sup 233}U(n; f) and {sup 235}U(n; f), indicating the alpha reactions likely formed a compound nucleus. This result indicates that the ratios of fission exit channel probabilities for two actinide nuclei populated via ({alpha}, {alpha}{prime}) can be used to determine an unknown fission cross section relative to a known one. The validity of the External Surrogate Ratio Method (ESRM) is tested and the results support the conclusions of Burke et al. [1].
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 926073
- Report Number(s):
- LLNL-PROC-400514
TRN: US0802493
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Conference
- Resource Relation:
- Conference: Presented at: CNR 2007, Yosemite, CA, United States, Oct 22 - Oct 26, 2007
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACTINIDE NUCLEI; ALPHA REACTIONS; CAPTURE; CROSS SECTIONS; CYCLOTRONS; DIRECT REACTIONS; FISSION; NEUTRON REACTIONS; SHAPE
Citation Formats
Lesher, S R, Bernstein, L A, Ai, H, Beausang, C W, Bleuel, D, Burke, J T, Clark, R M, Fallon, P, Gibelin, J, Lee, I Y, Lyles, B F, Macchiavelli, A O, McMahan, M A, Moody, K J, Norman, E B, Phair, L, Rodriguez-Vieitez, E, and Wiedeking, M. Benchmarking the External Surrogate Ratio Method using the (alpha,alpha' f) reaction at STARS. United States: N. p., 2008.
Web.
Lesher, S R, Bernstein, L A, Ai, H, Beausang, C W, Bleuel, D, Burke, J T, Clark, R M, Fallon, P, Gibelin, J, Lee, I Y, Lyles, B F, Macchiavelli, A O, McMahan, M A, Moody, K J, Norman, E B, Phair, L, Rodriguez-Vieitez, E, & Wiedeking, M. Benchmarking the External Surrogate Ratio Method using the (alpha,alpha' f) reaction at STARS. United States.
Lesher, S R, Bernstein, L A, Ai, H, Beausang, C W, Bleuel, D, Burke, J T, Clark, R M, Fallon, P, Gibelin, J, Lee, I Y, Lyles, B F, Macchiavelli, A O, McMahan, M A, Moody, K J, Norman, E B, Phair, L, Rodriguez-Vieitez, E, and Wiedeking, M. 2008.
"Benchmarking the External Surrogate Ratio Method using the (alpha,alpha' f) reaction at STARS". United States. https://www.osti.gov/servlets/purl/926073.
@article{osti_926073,
title = {Benchmarking the External Surrogate Ratio Method using the (alpha,alpha' f) reaction at STARS},
author = {Lesher, S R and Bernstein, L A and Ai, H and Beausang, C W and Bleuel, D and Burke, J T and Clark, R M and Fallon, P and Gibelin, J and Lee, I Y and Lyles, B F and Macchiavelli, A O and McMahan, M A and Moody, K J and Norman, E B and Phair, L and Rodriguez-Vieitez, E and Wiedeking, M},
abstractNote = {We measured the ratio of the fission probabilities of {sup 234}U* relative to {sup 236}U* formed via an ({alpha},{alpha}{prime}) direct reactions using the STARS array at the 88-inch cyclotron at the Lawrence Berkeley National Laboratory. This ratio has a shape similar to the ratio of neutron capture probabilities from {sup 233}U(n; f) and {sup 235}U(n; f), indicating the alpha reactions likely formed a compound nucleus. This result indicates that the ratios of fission exit channel probabilities for two actinide nuclei populated via ({alpha}, {alpha}{prime}) can be used to determine an unknown fission cross section relative to a known one. The validity of the External Surrogate Ratio Method (ESRM) is tested and the results support the conclusions of Burke et al. [1].},
doi = {},
url = {https://www.osti.gov/biblio/926073},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 09 00:00:00 EST 2008},
month = {Wed Jan 09 00:00:00 EST 2008}
}