Fluctuations in the 235U(n,f) cross section

Bertsch, G F.; Brown, David A.; Davis, E. D.

doi:10.1103/PhysRevC.98.014611

Title: Fluctuations in the 235U(n,f) cross section

Abstract

We examine the autocorrelation function of the ²³⁵U(n,f) reaction with a view to quantify the presence of intermediate structure in the cross section. Fluctuations due to compound nucleus resonances on the eV energy scale are clearly visible up to ~ 100 keV neutron energies. Lastly, structure on the one-keV energy scale is not present as a systematic feature of the correlation function, although it is present in the data covering the region around 20 keV.

Authors:

Bertsch, G F. ^[1]; Brown, David A. ^[2]; Davis, E. D. ^[3]

Univ. of Washington, Seattle, WA (United States). Dept. of Physics and Inst. of Nuclear Theory
Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center (NNDC)
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics; Triangle Univ. Nuclear Lab., Durham, NC (United States)

Publication Date:: 2018-07-18

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1431485

Alternate Identifier(s):: OSTI ID: 1460753

Report Number(s):: BNL-203449-2018-JAAM
Journal ID: ISSN 2469-9985; TRN: US1802317

Grant/Contract Number:: SC0012704; FG02-97ER41042; AC02- 98CH10886

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 98; Journal Issue: 1; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Bertsch, G F., Brown, David A., and Davis, E. D. Fluctuations in the 235U(n,f) cross section.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevC.98.014611.

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                    Bertsch, G F., Brown, David A., & Davis, E. D. Fluctuations in the 235U(n,f) cross section.  United States.  https://doi.org/10.1103/PhysRevC.98.014611

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                    Bertsch, G F., Brown, David A., and Davis, E. D. Wed .  
"Fluctuations in the 235U(n,f) cross section".  United States.  https://doi.org/10.1103/PhysRevC.98.014611.  https://www.osti.gov/servlets/purl/1431485.

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@article{osti_1431485,

  title        = {Fluctuations in the 235U(n,f) cross section},

  author       = {Bertsch, G F. and Brown, David A. and Davis, E. D.},

  abstractNote = {We examine the autocorrelation function of the 235U(n,f) reaction with a view to quantify the presence of intermediate structure in the cross section. Fluctuations due to compound nucleus resonances on the eV energy scale are clearly visible up to ~ 100 keV neutron energies. Lastly, structure on the one-keV energy scale is not present as a systematic feature of the correlation function, although it is present in the data covering the region around 20 keV.},

  doi          = {10.1103/PhysRevC.98.014611},

  journal      = {Physical Review C},

  number       = 1,

  volume       = 98,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

Copy to clipboard

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Works referencing / citing this record:

Diabatic paths through the scission point in nuclear fission
journal, August 2019

Bertsch, G. F.; Younes, W.; Robledo, L. M.
Physical Review C, Vol. 100, Issue 2
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Decay widths at the scission point in nuclear fission
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Title: Fluctuations in the 235U(n,f) cross section

Abstract

Citation Formats

Evaluation of the Neutron Data Standards journal, February 2018

ENDF/B-VIII.0: The 8 th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data journal, February 2018

Measurement of the Fission Cross Section of Uranium-235 for Incident Neutrons with Energies Between 2 and 100 keV journal, October 1974

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RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations journal, December 2009

Cross-section fluctuations in chaotic scattering systems journal, October 2016

A statistical analysis of the neutron-induced fission and total cross-section of235U up to 36 keV journal, September 1977

High Resolution Measurements of Neutron-Induced Fission Cross Sections for 233 U, 235 U, 239 Pu and 241 Pu Below 30 keV journal, June 1973

Analysis of neutron-capture data in the resonance region journal, September 1965

Finite-Sample-Size Effects in Nuclear Cross-Section Fluctuations journal, September 1965

Coherence width of cross-section fluctuations and maxima in the excitation function journal, January 1967

U 233 Fission Cross Section Measured Using a Nuclear Explosion in Space journal, February 1966

Spin determination of resonance structure in ( U 235 + n ) below 25 keV journal, September 1978

R-Matrix Analysis of 235 U Neutron Transmission and Cross-Section Measurements in the 0- to 2.25-keV Energy Range journal, February 1999

Cross-section fluctuations in the Al27(p, α)Mg24 reaction journal, March 1964

Measurement of the Neutron Capture and Fission Cross Sections of 239 Pu and 235 U, 0.02 eV to 200 keV, the Neutron Capture Cross Sections of 197 Au, 10 to 50 keV, and Neutron Fission Cross Sections of 233 U, 5 to 20 journal, February 1976

Limitation of the Number of Degrees of Freedom in Fluctuation Analysis journal, January 1967

Subthreshold Fission Cross Section of 240 Pu and the Fission Cross Sections of 235 U and 239 Pu journal, December 1984

Cross-section fluctuations in open microwave billiards and quantum graphs: The counting-of-maxima method revisited journal, August 2015

The neutron induced fission cross section of 235U in the energy region from 0.008 eV to 30 keV journal, January 1976

Conductance Peaks in Open Quantum Dots journal, October 2011

Widths of fluctuations in nuclear cross sections journal, June 1963

High Resolution Fission Cross Section of Uranium-235 from 20 eV to 100 keV journal, March 1971

A theory of fluctuations in nuclear cross sections journal, September 1963

Statistical Theory of the Energy Levels of Complex Systems. III journal, January 1962

Fission cross-section measurement on 235U journal, April 1968

Measurements of the Neutron Fission Cross Sections of 235 U ( E n = 0.01 eV to 30 keV) and 239 Pu ( E n = 0.01 to 60 eV) journal, September 1984

Structure in the fission cross-section of 235U journal, September 1970

Finite energy range and modulation effects in the analysis of cross-section fluctuation data journal, June 1964

Fluctuations of Nuclear Cross Sections in the "Continuum" Region journal, November 1960

Diabatic paths through the scission point in nuclear fission journal, August 2019

Decay widths at the scission point in nuclear fission journal, October 2019

Evaluation of the Neutron Data Standards
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ENDF/B-VIII.0: The 8 th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data
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Measurement of the Fission Cross Section of Uranium-235 for Incident Neutrons with Energies Between 2 and 100 keV
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IAEA CIELO Evaluation of Neutron-induced Reactions on 235 U and 238 U Targets
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Towards a More Complete and Accurate Experimental Nuclear Reaction Data Library (EXFOR): International Collaboration Between Nuclear Reaction Data Centres (NRDC)
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RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations
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Cross-section fluctuations in chaotic scattering systems
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A statistical analysis of the neutron-induced fission and total cross-section of235U up to 36 keV
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High Resolution Measurements of Neutron-Induced Fission Cross Sections for ²³³ U, ²³⁵ U, ²³⁹ Pu and ²⁴¹ Pu Below 30 keV
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Analysis of neutron-capture data in the resonance region
journal, September 1965

Finite-Sample-Size Effects in Nuclear Cross-Section Fluctuations
journal, September 1965

Coherence width of cross-section fluctuations and maxima in the excitation function
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$U^{233}$ Fission Cross Section Measured Using a Nuclear Explosion in Space
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R-Matrix Analysis of ²³⁵ U Neutron Transmission and Cross-Section Measurements in the 0- to 2.25-keV Energy Range
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Cross-section fluctuations in the Al27(p, α)Mg24 reaction
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Limitation of the Number of Degrees of Freedom in Fluctuation Analysis
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Subthreshold Fission Cross Section of ²⁴⁰ Pu and the Fission Cross Sections of ²³⁵ U and ²³⁹ Pu
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Cross-section fluctuations in open microwave billiards and quantum graphs: The counting-of-maxima method revisited
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The neutron induced fission cross section of 235U in the energy region from 0.008 eV to 30 keV
journal, January 1976

Conductance Peaks in Open Quantum Dots
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Widths of fluctuations in nuclear cross sections
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High Resolution Fission Cross Section of Uranium-235 from 20 eV to 100 keV
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A theory of fluctuations in nuclear cross sections
journal, September 1963

Statistical Theory of the Energy Levels of Complex Systems. III
journal, January 1962

Fission cross-section measurement on 235U
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Measurements of the Neutron Fission Cross Sections of ²³⁵ U ( E _n = 0.01 eV to 30 keV) and ²³⁹ Pu ( E _n = 0.01 to 60 eV)
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Structure in the fission cross-section of 235U
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Diabatic paths through the scission point in nuclear fission
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