Critical mass analysis for {sup 235}U and {sup 239}Pu systems moderated and reflected by D{sub 2}O

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Description

Criticality dimensions for highly enriched {sup 235}U(93.5) and {sup 239}Pu(95.5) systems mixed with D{sub 2}O were studied. The objective of this work is to investigate the minimum critical mass and concentration of uranium and plutonium systems in a reflector-moderated arrangement. The present work demonstrates the critical instability of these systems that are moderated and reflected by D{sub 2}O and expands in previous unpublished work. These calculations were performed in a spherical geometry with the DANTS codes using the Hansen-Roach cross section library. Densities examined ranged from normal to very small, and are assumed to be uniform throughout the core. These ... continued below

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6 p.

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Loaiza, D. & Stratton, W. December 31, 1998.

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Description

Criticality dimensions for highly enriched {sup 235}U(93.5) and {sup 239}Pu(95.5) systems mixed with D{sub 2}O were studied. The objective of this work is to investigate the minimum critical mass and concentration of uranium and plutonium systems in a reflector-moderated arrangement. The present work demonstrates the critical instability of these systems that are moderated and reflected by D{sub 2}O and expands in previous unpublished work. These calculations were performed in a spherical geometry with the DANTS codes using the Hansen-Roach cross section library. Densities examined ranged from normal to very small, and are assumed to be uniform throughout the core. These spherical systems are reflected by 100 cm of D{sub 2}O.

Physical Description

6 p.

Notes

INIS; OSTI as DE99002273

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  • American Nuclear Society winter meeting, Washington, DC (United States), 15-19 Nov 1998

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  • Other: DE99002273
  • Report No.: LA-UR--98-3278
  • Report No.: CONF-981106--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/334334 | External Link
  • Office of Scientific & Technical Information Report Number: 334334
  • Archival Resource Key: ark:/67531/metadc677019

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  • December 31, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 25, 2016, 2:22 p.m.

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Loaiza, D. & Stratton, W. Critical mass analysis for {sup 235}U and {sup 239}Pu systems moderated and reflected by D{sub 2}O, report, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc677019/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.