Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS

S. R. Lesher; L. A. Bernstein; H. Ai; C. W. Beausang; D. Bleuel; J. T. Burke; R. M. Clark; P. Fallon; J. Gibelin; I. Y. Lee; B. F. Lyles; A. O. Macchiavelli; M. A. McMahan; K. J. Moody; E. B. Norman; L. Phair; E. Rodriguez-Vieitez; M. Wiedeking

doi:10.1063/1.2920712

Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS

S. R. Lesher
, L. A. Bernstein
, H. Ai
, C. W. Beausang
, D. Bleuel
, J. T. Burke
, R. M. Clark
, P. Fallon
, J. Gibelin
, I. Y. Lee
, B. F. Lyles
, A. O. Macchiavelli
, M. A. McMahan
, K. J. Moody
, E. B. Norman
, L. Phair
, E. Rodriguez-Vieitez
, M. Wiedeking

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We measured the ratio of the fission probabilities of 234U* relative to 236U* formed via an (α, α′) 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 233U(n,f) and 235U(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 (α, α′) 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]. © 2008 American Institute of Physics.

Original language	English
Title of host publication	2007 International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2007
DOIs	https://doi.org/10.1063/1.2920712
State	Published - 2008

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10.1063/1.2920712

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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. (2008). Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS. In 2007 International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2007 https://doi.org/10.1063/1.2920712

@inproceedings{500d6013c5a74c49afa21af011272396,

title = "Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS",

abstract = "We measured the ratio of the fission probabilities of 234U* relative to 236U* formed via an (α, α′) 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 233U(n,f) and 235U(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 (α, α′) 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]. {\textcopyright} 2008 American Institute of Physics.",

author = "Lesher, \{S. R.\} and Bernstein, \{L. A.\} and H. Ai and Beausang, \{C. W.\} and D. Bleuel and Burke, \{J. T.\} and Clark, \{R. M.\} and P. Fallon and J. Gibelin 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 L. Phair and E. Rodriguez-Vieitez and M. Wiedeking",

year = "2008",

doi = "10.1063/1.2920712",

language = "English",

booktitle = "2007 International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2007",

}

Lesher, SR, Bernstein, LA, Ai, H, Beausang, CW, Bleuel, D, Burke, JT, Clark, RM, Fallon, P, Gibelin, J, Lee, IY, Lyles, BF, Macchiavelli, AO, McMahan, MA, Moody, KJ, Norman, EB, Phair, L, Rodriguez-Vieitez, E & Wiedeking, M 2008, Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS. in 2007 International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2007. https://doi.org/10.1063/1.2920712

TY - GEN

T1 - Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS

AU - Lesher, S. R.

AU - Bernstein, L. A.

AU - Ai, H.

AU - Beausang, C. W.

AU - Bleuel, D.

AU - Burke, J. T.

AU - Clark, R. M.

AU - Fallon, P.

AU - Gibelin, J.

AU - Lee, I. Y.

AU - Lyles, B. F.

AU - Macchiavelli, A. O.

AU - McMahan, M. A.

AU - Moody, K. J.

AU - Norman, E. B.

AU - Phair, L.

AU - Rodriguez-Vieitez, E.

AU - Wiedeking, M.

PY - 2008

Y1 - 2008

N2 - We measured the ratio of the fission probabilities of 234U* relative to 236U* formed via an (α, α′) 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 233U(n,f) and 235U(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 (α, α′) 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]. © 2008 American Institute of Physics.

AB - We measured the ratio of the fission probabilities of 234U* relative to 236U* formed via an (α, α′) 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 233U(n,f) and 235U(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 (α, α′) 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]. © 2008 American Institute of Physics.

UR - https://dx.doi.org/10.1063/1.2920712

U2 - 10.1063/1.2920712

DO - 10.1063/1.2920712

M3 - Conference contribution

BT - 2007 International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2007

ER -

Benchmarking the external surrogate ratio method using the (α, α′f) reaction at STARS

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