skip to main content

DOE PAGESDOE PAGES

Title: Integral cross section measurement of the U 235 ( n , n ' ) U 235 m reaction in a pulsed reactor

The integral measurement of the neutron inelastic cross section leading to the 26-minute half-life 235mU isomer in a fission-like neutron spectrum is presented. The experiment has been performed at a pulsed reactor, where the internal conversion decay of the isomer was measured using a dedicated electron detector after activation. The sample preparation, efficiency measurement, irradiation, radiochemistry purification, and isomer decay measurement will be presented. We determined the integral cross section for the ²³⁵U(n,n') 235mU reaction to be 1.00±0.13b. This result supports an evaluation performed with TALYS-1.4 code with respect to the isomer excitation as well as the total neutron inelastic scattering cross section.
Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Grant/Contract Number:
AC52-06NA25396; AC52-07NA27344
Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear physics
Additional Journal Information:
Journal Name: Physical Review. C, Nuclear physics Journal Volume: 91 Journal Issue: 4; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
OSTI Identifier:
1179365

Bélier, G., Bond, E. M., Vieira, D. J., Authier, N., Becker, J. A., Hyneck, D., Jacquet, X., Jansen, Y., Legendre, J., Macri, R., Méot, V., and Romain, P.. Integral cross section measurement of the U 235 ( n , n ' ) U 235 m reaction in a pulsed reactor. United States: N. p., Web. doi:10.1103/PhysRevC.91.044605.
Bélier, G., Bond, E. M., Vieira, D. J., Authier, N., Becker, J. A., Hyneck, D., Jacquet, X., Jansen, Y., Legendre, J., Macri, R., Méot, V., & Romain, P.. Integral cross section measurement of the U 235 ( n , n ' ) U 235 m reaction in a pulsed reactor. United States. doi:10.1103/PhysRevC.91.044605.
Bélier, G., Bond, E. M., Vieira, D. J., Authier, N., Becker, J. A., Hyneck, D., Jacquet, X., Jansen, Y., Legendre, J., Macri, R., Méot, V., and Romain, P.. 2015. "Integral cross section measurement of the U 235 ( n , n ' ) U 235 m reaction in a pulsed reactor". United States. doi:10.1103/PhysRevC.91.044605.
@article{osti_1179365,
title = {Integral cross section measurement of the U 235 ( n , n ' ) U 235 m reaction in a pulsed reactor},
author = {Bélier, G. and Bond, E. M. and Vieira, D. J. and Authier, N. and Becker, J. A. and Hyneck, D. and Jacquet, X. and Jansen, Y. and Legendre, J. and Macri, R. and Méot, V. and Romain, P.},
abstractNote = {The integral measurement of the neutron inelastic cross section leading to the 26-minute half-life 235mU isomer in a fission-like neutron spectrum is presented. The experiment has been performed at a pulsed reactor, where the internal conversion decay of the isomer was measured using a dedicated electron detector after activation. The sample preparation, efficiency measurement, irradiation, radiochemistry purification, and isomer decay measurement will be presented. We determined the integral cross section for the ²³⁵U(n,n')235mU reaction to be 1.00±0.13b. This result supports an evaluation performed with TALYS-1.4 code with respect to the isomer excitation as well as the total neutron inelastic scattering cross section.},
doi = {10.1103/PhysRevC.91.044605},
journal = {Physical Review. C, Nuclear physics},
number = 4,
volume = 91,
place = {United States},
year = {2015},
month = {4}
}