Systematics of Criticality Data of Special Actinide Nuclides Deduced through the Trombay Criticality Formula

Srinivasan, M.; Rao, Koppula Srinivas; Garg, Suresh; Acharya, Govatsa

doi:10.13182/nse89-a27479

Cited by 11 publications

(8 citation statements)

References 12 publications

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“…The smallest calculated critical mass, as reported by Srinavasan et al, (23) for any of the fissile actinides ( 242m Am-242 ) is only ~38 g. This amount is about 15 times less than that for 239 Pu. The critical volumes of the aqueous solution containing these masses differ, however, by only about 2/3 at 7.56 and 12.4 liters, respectively, though, as noted, the critical masses differ by a factor of nearly 15.…”

Section: Gold and Uraniummentioning

confidence: 68%

“…(23) The correlation results in a critical mass for Pu that is present is less than that of 240 Pu. Thus, in considering mixtures of fissile and fissible isotopes, the smallest critical mass may be either that for the unmoderated material (oxide or metal), or that for a mixture with water, depending on the isotope composition of the nuclear material.…”

Section: Critical Masses Of Metal Systems Of Fissile and Fissible Nucmentioning

confidence: 97%

“…In a recent paper, Srinivasan (23) showed that k ∞ for metal systems of fissile nuclides correlates linearly with the fissionability parameter Z 2 /A. This correlation (see Figure 53) can be used to estimate values of k ∞ for metal systems of fissile nuclides where cross-section data are not available.…”

Section: Infinite Multiplication Factors (K ∞ ) For Metal Systems Of mentioning

confidence: 98%

“…Data on a number of fissile nuclides are provided by M. Srinavasan, et al (23) These data are reproduced here in Table XVI. Am , the critical volumes are reasonably constant reflecting the fact that a certain volume of water is required to thermalize the neutrons appropriate to these cross sections.…”

Section: Gold and Uraniummentioning

confidence: 99%

See 3 more Smart Citations

Anomalies of Nuclear Criticality, Revision 6

Clayton¹,

Prichard²,

Durst³

et al. 2010

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Section: Gold and Uraniummentioning

confidence: 68%

Section: Critical Masses Of Metal Systems Of Fissile and Fissible Nucmentioning

confidence: 97%

Section: Infinite Multiplication Factors (K ∞ ) For Metal Systems Of mentioning

confidence: 98%

Section: Gold and Uraniummentioning

confidence: 99%

See 2 more Smart Citations

Anomalies of Nuclear Criticality, Revision 6

Clayton¹,

Prichard²,

Durst³

et al. 2010

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“…There were several documents so far that supplied critical mass calculation of curium isotopes. [4][5][6][7][8][9][10][11] They gave us important information; however, none of the documents covered the whole in the aspect of nuclides, moderation and reflector conditions.…”

Section: Introductionmentioning

confidence: 99%

Critical and Subcritical Mass Calculations of Curium-243 to-247 Based on JENDL-3.2 for Revision of ANSI/ANS-8.15.

Okuno

Kawasaki

2002

J. Nucl. Sci. Technol.

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Critical and subcritical masses were calculated for a sphere of five curium isotopes from 243 Cm to 247 Cm in metal and in metal-water mixtures considering three reflector conditions: bare, with a water reflector or a stainless steel reflector. The calculation were made mainly with a combination of a continuous energy Monte Carlo neutron transport calculation code, MCNP, and the Japanese Evaluated Nuclear Data Library, JENDL-3.2. Other evaluated nuclear data files, ENDF/B-VI and JEF-2.2, were also applied to find differences in calculation results of the neutron multiplication factor originated from different nuclear data files. A large dependence on the evaluated nuclear data files was found in the calculation results: more than 10% k/k relative differences in the neutron multiplication factor for a homogeneous mixture of 243 Cm metal and water when JENDL-3.2 was replaced with ENDF/B-VI and JEF-2.2, respectively; and a 44% reduction in the critical mass by changing from JENDL-3.2 to ENDF/B-VI for 246 Cm metal. The present study supplied basic information to the ANSI/ANS-8.15 Working Group for revision of the standard for nuclear criticality control of special actinide elements. The new or revised values of the subcritical mass limits for curium isotopes accepted by the ANSI/ANS-8.15 Working Group were finally summarized.

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Fusion-fission detonators for advanced fuels

Linhart

1992

Czech J Phys

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Systematics of Criticality Data of Special Actinide Nuclides Deduced through the Trombay Criticality Formula

Cited by 11 publications

References 12 publications

Anomalies of Nuclear Criticality, Revision 6

Anomalies of Nuclear Criticality, Revision 6

Critical and Subcritical Mass Calculations of Curium-243 to-247 Based on JENDL-3.2 for Revision of ANSI/ANS-8.15.

Fusion-fission detonators for advanced fuels

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