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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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The Nuclear Family: Empowering parents and caregivers
The Diversity and Inclusion in ANS Committee is hosting a webinar today to celebrate the contributions of parents in the nuclear industry while fostering diversity and inclusion within the community.
Register now: The webinar, from 1:00-2:00 pm ET, will highlight how the nuclear industry supports caregivers, new parents, and new mothers, and will focus on life transitions and parental responsibilities.
Rene Sanchez, David Loaiza, Glenn Brunson, Robert Kimpland
Nuclear Science and Engineering | Volume 147 | Number 3 | July 2004 | Pages 307-318
Technical Paper | doi.org/10.13182/NSE04-A2435
Articles are hosted by Taylor and Francis Online.
Scientists at the Los Alamos National Laboratory measured the critical masses of square prisms of highly enriched uranium diluted in various X/235U with matrix material and polyethylene. The configuration cores were 22.86 and 45.72 cm square and were reflected with 8.13-cm-thick and 10.16-cm-thick side polyethylene reflectors, respectively. The configurations had 10.16-cm-thick top and bottom polyethylene reflectors. For some configurations, the Rossi-, which is an eigenvalue characteristic for a particular configuration, was measured to establish a reactivity scale based on the degree of subcriticality. These experiments provided critical mass data in the thermal energy range for systems containing Si, Mg, Al, Gd, and Fe. The measured keff from these experiments was compared with the calculated keff from MCNP using ENDF/B-V and ENDF/B-VI cross-section data. The observed biases were +0.005 k and +0.008 k for Si, +0.0006 k and +0.008 k for Al, +0.0023 k for Mg, +0.004 k and +0.01304 k for Gd, and +0.0123 k and -0.00106 k for Fe.