Measured and simulated Cf(sf)252 prompt neutron-photon competition

Marcath, Matthew J.; Haight, Robert C.; Vogt, Ramona; Devlin, Matthew James; Talou, Patrick; Stetcu, Ionel; Randrup, Jorgen; Schuster, Patricia F.; Clarke, Shaun D.; Pozzi, Sara A.

doi:10.1103/PhysRevC.97.044622

Title: Measured and simulated ${}^{252}{Cf (sf)}$ prompt neutron-photon competition

Abstract

Neutrons and photons are characteristically emitted during the nuclear fission process when a deformed, neutron-rich nucleus divides into two fragments that then deexcite. During deexcitation, neutrons are emitted first, followed by photons; this process gives rise to correlated emissions. Few data exist on event-by-event neutron-photon correlation. In this work, 252Cf(sf) neutron and photon correlations were measured with an array of 45 liquid organic scintillation detectors and a fission chamber. The measured correlations are compared with MCPNX-PoliMi simulations using the built-in model and two event-by-event fission models, CGMF and FREYA, which predict correlations in prompt emissions from fission. Experimental results suggest weak neutron-photon competition during fragment deexcitation.

Authors:

Marcath, Matthew J. ^[1]; Haight, Robert C. ^[2]; Vogt, Ramona ^[3]; Devlin, Matthew James ^[2]; Talou, Patrick ^[2];

^[2]; Randrup, Jorgen ^[4]; Schuster, Patricia F. ^[1]; Clarke, Shaun D. ^[1]; Pozzi, Sara A. ^[1]

Univ. of Michigan, Ann Arbor, MI (United States). Department of Nuclear Engineering and Radiological Sciences
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physics Division; Univ. of California, Davis, CA (United States). Physics Department
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division

Publication Date:: 2018-04-30

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)

OSTI Identifier:: 1458658

Alternate Identifier(s):: OSTI ID: 1435380; OSTI ID: 1463555; OSTI ID: 1515835

Report Number(s):: LLNL-JRNL-745252; LA-UR-18-20825
Journal ID: ISSN 2469-9985; PRVCAN; 900716; TRN: US1901493

Grant/Contract Number:: AC52-07NA27344; AC52-06NA25396; NA0002534; AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 97; Journal Issue: 4; 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


                    Marcath, Matthew J., Haight, Robert C., Vogt, Ramona, Devlin, Matthew James, Talou, Patrick, Stetcu, Ionel, Randrup, Jorgen, Schuster, Patricia F., Clarke, Shaun D., and Pozzi, Sara A. Measured and simulated Cf(sf)252 prompt neutron-photon competition.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevC.97.044622.

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                    Marcath, Matthew J., Haight, Robert C., Vogt, Ramona, Devlin, Matthew James, Talou, Patrick, Stetcu, Ionel, Randrup, Jorgen, Schuster, Patricia F., Clarke, Shaun D., & Pozzi, Sara A. Measured and simulated Cf(sf)252 prompt neutron-photon competition.  United States.  https://doi.org/10.1103/PhysRevC.97.044622

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                    Marcath, Matthew J., Haight, Robert C., Vogt, Ramona, Devlin, Matthew James, Talou, Patrick, Stetcu, Ionel, Randrup, Jorgen, Schuster, Patricia F., Clarke, Shaun D., and Pozzi, Sara A. Mon .  
"Measured and simulated Cf(sf)252 prompt neutron-photon competition".  United States.  https://doi.org/10.1103/PhysRevC.97.044622.  https://www.osti.gov/servlets/purl/1458658.

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@article{osti_1458658,

  title        = {Measured and simulated Cf(sf)252 prompt neutron-photon competition},

  author       = {Marcath, Matthew J. and Haight, Robert C. and Vogt, Ramona and Devlin, Matthew James and Talou, Patrick and Stetcu, Ionel and Randrup, Jorgen and Schuster, Patricia F. and Clarke, Shaun D. and Pozzi, Sara A.},

  abstractNote = {Neutrons and photons are characteristically emitted during the nuclear fission process when a deformed, neutron-rich nucleus divides into two fragments that then deexcite. During deexcitation, neutrons are emitted first, followed by photons; this process gives rise to correlated emissions. Few data exist on event-by-event neutron-photon correlation. In this work, 252Cf(sf) neutron and photon correlations were measured with an array of 45 liquid organic scintillation detectors and a fission chamber. The measured correlations are compared with MCPNX-PoliMi simulations using the built-in model and two event-by-event fission models, CGMF and FREYA, which predict correlations in prompt emissions from fission. Experimental results suggest weak neutron-photon competition during fragment deexcitation.},

  doi          = {10.1103/PhysRevC.97.044622},

  journal      = {Physical Review C},

  number       = 4,

  volume       = 97,

  place        = {United States},

  year         = {2018},

  month        = {4}

}

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Works referencing / citing this record:

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Schmidt, Karl-Heinz; Jurado, Beatriz
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Prompt neutron multiplicity distributions inferred from $γ$ -ray and fission fragment energy measurements
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Title: Measured and simulated Cf ( sf ) 252 prompt neutron-photon competition

Abstract

Citation Formats

Late-time emission of prompt fission γ rays journal, December 2016

Pulse Shape Discrimination in a Plastic Scintillator journal, June 1960

Prompt γ -ray production in neutron-induced fission of 239 Pu journal, April 2013

Neutron detection in a high-gamma field using solution-grown stilbene journal, January 2016

Properties of prompt-fission γ rays journal, August 2014

Reevaluation of Prompt Neutron Emission Multiplicity Distributions for Spontaneous Fission journal, October 2008

Multiplicities of Fission Neutrons journal, February 1956

Fission Reaction Event Yield Algorithm FREYA 2.0.2 journal, January 2018

The Angular Distribution of Prompt Neutrons Emitted in Fission journal, November 1952

Gamma de-excitation of fission fragments journal, December 1964

The content of 250Cf and 248Cm in 252Cf neutron sources and the effect on the neutron emission rate journal, May 2007

Event-by-event study of photon observables in spontaneous and thermal fission journal, April 2013

MCNPX-PoliMi for nuclear nonproliferation applications journal, December 2012

The Prompt Fission Neutron Spectrum (PFNS) Measurement Program at LANSCE journal, May 2014

Impact of low-energy photons on the characteristics of prompt fission γ -ray spectra journal, July 2015

Event-by-event study of neutron observables in spontaneous and thermal fission journal, October 2011

Prompt Fission Neutrons and Gamma Rays in a Monte Carlo Hauser-Feshbach Formalism journal, January 2013

Correlated prompt fission data in transport simulations journal, January 2018

Refined treatment of angular momentum in the event-by-event fission model freya journal, April 2014

Prompt neutron multiplicity in correlation with fragments from spontaneous fission of Cf 252 journal, December 2014

Calculation of fission observables through event-by-event simulation journal, August 2009

MCNP-DSP: A neutron and gamma ray Monte carlo calculation of source-driven noise-measured parameters journal, November 1996

Gamma de-excitation of fission fragments journal, March 1965

Fission modelling with FIFRELIN journal, December 2015

Modeling the Emission of Prompt Fission γ Rays for Fundamental Physics and Applications journal, January 2014

Mass-dependent structure in the fission γ-ray yields from 252Cf journal, October 1969

Time distribution of γ-rays from spontaneous fission of 252Cf journal, September 1970

MCNP-PoliMi: a Monte-Carlo code for correlation measurements journal, November 2003

Evaluation of prompt fission gamma rays for use in simulating nuclear safeguard measurements journal, February 2001

Evaluation of neutron light output response functions in EJ-309 organic scintillators journal, January 2017

Digital pulse shape discrimination journal, May 2007

A new measurement of the 6 Li(n, α )t cross section at MeV energies using a 252Cf fission chamber and 6 Li scintillators journal, December 2017

252Cf fission revisited — new insights into the fission process journal, October 1989

An algorithm for charge-integration, pulse-shape discrimination and estimation of neutron/photon misclassification in organic scintillators journal, September 2015

Prompt Fission γ-rays Measured Using Liquid Scintillators journal, May 2014

Investigation of the prompt neutron emission mechanism in low energy fission of 235,233 U(n th , f) and 252 Cf(sf) journal, January 2010

Correlations of neutron multiplicity and γ -ray multiplicity with fragment mass and total kinetic energy in spontaneous fission of Cf 252 journal, January 2016

Neutron angular correlations in spontaneous and neutron-induced fission journal, December 2014

Improved modeling of photon observables with the event-by-event fission model freya journal, December 2017

General Description of Fission Observables: GEF Model Code journal, January 2016

Facility for neutron multiplicity measurements in fission journal, January 2004

Gamma-ray multiplicity measurement of the spontaneous fission of 252Cf in a segmented HPGe/BGO detector array journal, December 2010

Spectrum of γ rays in the 8- to 20-MeV range from Cf 252 spontaneous fission journal, August 1974

New Calculation of Prompt Fission Neutron Spectra and Average Prompt Neutron Multiplicities journal, June 1982

Velocity and Angular Distributions of Prompt Neutrons from Spontaneous Fission of Cf 252 journal, June 1962

Gamma-neutron competition in the de-excitation mechanism of the fission fragments of 252Cf journal, July 1972

New prompt spectral γ -ray data from the reaction 252 Cf(sf) and its implication on present evaluated nuclear data files journal, February 2013

Review on the progress in nuclear fission—experimental methods and theoretical descriptions journal, September 2018

High resolution measurement of tagged two-neutron energy and angle correlations in Cf 252 (sf) journal, July 2019

Neutron and γ multiplicities as a function of incident neutron energy for the Np 237 ( n , f ) reaction journal, October 2019

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Title: Measured and simulated ${}^{252}{Cf (sf)}$ prompt neutron-photon competition

Late-time emission of prompt fission $γ$ rays
journal, December 2016

Pulse Shape Discrimination in a Plastic Scintillator
journal, June 1960

Prompt $γ$ -ray production in neutron-induced fission of $^{239}$ Pu
journal, April 2013

Neutron detection in a high-gamma field using solution-grown stilbene
journal, January 2016

Properties of prompt-fission $γ$ rays
journal, August 2014

Reevaluation of Prompt Neutron Emission Multiplicity Distributions for Spontaneous Fission
journal, October 2008

Multiplicities of Fission Neutrons
journal, February 1956

Fission Reaction Event Yield Algorithm FREYA 2.0.2
journal, January 2018

The Angular Distribution of Prompt Neutrons Emitted in Fission
journal, November 1952

Gamma de-excitation of fission fragments
journal, December 1964

The content of 250Cf and 248Cm in 252Cf neutron sources and the effect on the neutron emission rate
journal, May 2007

Event-by-event study of photon observables in spontaneous and thermal fission
journal, April 2013

MCNPX-PoliMi for nuclear nonproliferation applications
journal, December 2012

The Prompt Fission Neutron Spectrum (PFNS) Measurement Program at LANSCE
journal, May 2014

Impact of low-energy photons on the characteristics of prompt fission $γ$ -ray spectra
journal, July 2015

Event-by-event study of neutron observables in spontaneous and thermal fission
journal, October 2011

Prompt Fission Neutrons and Gamma Rays in a Monte Carlo Hauser-Feshbach Formalism
journal, January 2013

Correlated prompt fission data in transport simulations
journal, January 2018

Refined treatment of angular momentum in the event-by-event fission model freya
journal, April 2014

Prompt neutron multiplicity in correlation with fragments from spontaneous fission of ${}^{252}{Cf}$
journal, December 2014

Calculation of fission observables through event-by-event simulation
journal, August 2009

MCNP-DSP: A neutron and gamma ray Monte carlo calculation of source-driven noise-measured parameters
journal, November 1996

Gamma de-excitation of fission fragments
journal, March 1965

Fission modelling with FIFRELIN
journal, December 2015

Modeling the Emission of Prompt Fission γ Rays for Fundamental Physics and Applications
journal, January 2014

Mass-dependent structure in the fission γ-ray yields from 252Cf
journal, October 1969

Time distribution of γ-rays from spontaneous fission of 252Cf
journal, September 1970

MCNP-PoliMi: a Monte-Carlo code for correlation measurements
journal, November 2003

Evaluation of prompt fission gamma rays for use in simulating nuclear safeguard measurements
journal, February 2001

Evaluation of neutron light output response functions in EJ-309 organic scintillators
journal, January 2017

Digital pulse shape discrimination
journal, May 2007

A new measurement of the $^{6}$ Li(n, $α$ )t cross section at MeV energies using a 252Cf fission chamber and $^{6}$ Li scintillators
journal, December 2017

252Cf fission revisited — new insights into the fission process
journal, October 1989

An algorithm for charge-integration, pulse-shape discrimination and estimation of neutron/photon misclassification in organic scintillators
journal, September 2015

Prompt Fission γ-rays Measured Using Liquid Scintillators
journal, May 2014

Investigation of the prompt neutron emission mechanism in low energy fission of ^235,233 U(n _th , f) and ²⁵² Cf(sf)
journal, January 2010

Correlations of neutron multiplicity and $γ$ -ray multiplicity with fragment mass and total kinetic energy in spontaneous fission of ${}^{252}{Cf}$
journal, January 2016

Neutron angular correlations in spontaneous and neutron-induced fission
journal, December 2014

Improved modeling of photon observables with the event-by-event fission model freya
journal, December 2017

General Description of Fission Observables: GEF Model Code
journal, January 2016

Facility for neutron multiplicity measurements in fission
journal, January 2004

Gamma-ray multiplicity measurement of the spontaneous fission of 252Cf in a segmented HPGe/BGO detector array
journal, December 2010

Spectrum of $γ$ rays in the 8- to 20-MeV range from ${}^{252}{Cf}$ spontaneous fission
journal, August 1974

New Calculation of Prompt Fission Neutron Spectra and Average Prompt Neutron Multiplicities
journal, June 1982

Velocity and Angular Distributions of Prompt Neutrons from Spontaneous Fission of ${Cf}^{252}$
journal, June 1962

Gamma-neutron competition in the de-excitation mechanism of the fission fragments of 252Cf
journal, July 1972

New prompt spectral $γ$ -ray data from the reaction $^{252}$ Cf(sf) and its implication on present evaluated nuclear data files
journal, February 2013

Review on the progress in nuclear fission—experimental methods and theoretical descriptions
journal, September 2018

High resolution measurement of tagged two-neutron energy and angle correlations in ${}^{252}{Cf}$ (sf)
journal, July 2019

Neutron and $γ$ multiplicities as a function of incident neutron energy for the ${}^{237}{Np} (n, f)$ reaction
journal, October 2019

Prompt neutron multiplicity distributions inferred from $γ$ -ray and fission fragment energy measurements
journal, November 2019