Dataoptimized source modeling with the Backwards Liouville Test–Kinetic method
Abstract
In the standard practice of neutron multiplicity counting , the first three sampled factorial moments of the event triggered neutron count distribution were used to quantify the three main neutron source terms: the spontaneous fissile material effective mass, the relative (α,n) production and the induced fission source responsible for multiplication. Our study compares three methods to quantify the statistical uncertainty of the estimated mass: the bootstrap method, propagation of variance through moments, and statistical analysis of cycle data method. Each of the three methods was implemented on a set of four different NMC measurements, held at the JRClaboratory in Ispra, Italy, sampling four different Pu samples in a standard Plutonium Scrap Multiplicity Counter (PSMC) well counter.
 Authors:

 Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Space Science and Applications
 New Mexico Consortium, Los Alamos, NM (United States)
 Publication Date:
 Research Org.:
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1392883
 Report Number(s):
 LAUR1724743
Journal ID: ISSN 13646826
 Grant/Contract Number:
 AC5206NA25396
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Journal of Atmospheric and SolarTerrestrial Physics
 Additional Journal Information:
 Journal Volume: 875; Journal Issue: C; Journal ID: ISSN 13646826
 Country of Publication:
 United States
 Language:
 English
 Subject:
 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Heliospheric and Magnetospheric Physics; Test particle
Citation Formats
Woodroffe, J. R., Brito, T. V., Jordanova, V. K., Henderson, M. G., Morley, S. K., and Denton, M. H. Dataoptimized source modeling with the Backwards Liouville Test–Kinetic method. United States: N. p., 2017.
Web. doi:10.1016/j.jastp.2017.09.010.
Woodroffe, J. R., Brito, T. V., Jordanova, V. K., Henderson, M. G., Morley, S. K., & Denton, M. H. Dataoptimized source modeling with the Backwards Liouville Test–Kinetic method. United States. doi:10.1016/j.jastp.2017.09.010.
Woodroffe, J. R., Brito, T. V., Jordanova, V. K., Henderson, M. G., Morley, S. K., and Denton, M. H. Thu .
"Dataoptimized source modeling with the Backwards Liouville Test–Kinetic method". United States. doi:10.1016/j.jastp.2017.09.010. https://www.osti.gov/servlets/purl/1392883.
@article{osti_1392883,
title = {Dataoptimized source modeling with the Backwards Liouville Test–Kinetic method},
author = {Woodroffe, J. R. and Brito, T. V. and Jordanova, V. K. and Henderson, M. G. and Morley, S. K. and Denton, M. H.},
abstractNote = {In the standard practice of neutron multiplicity counting , the first three sampled factorial moments of the event triggered neutron count distribution were used to quantify the three main neutron source terms: the spontaneous fissile material effective mass, the relative (α,n) production and the induced fission source responsible for multiplication. Our study compares three methods to quantify the statistical uncertainty of the estimated mass: the bootstrap method, propagation of variance through moments, and statistical analysis of cycle data method. Each of the three methods was implemented on a set of four different NMC measurements, held at the JRClaboratory in Ispra, Italy, sampling four different Pu samples in a standard Plutonium Scrap Multiplicity Counter (PSMC) well counter.},
doi = {10.1016/j.jastp.2017.09.010},
journal = {Journal of Atmospheric and SolarTerrestrial Physics},
number = C,
volume = 875,
place = {United States},
year = {2017},
month = {9}
}
Web of Science