Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

Goodell, John J.; Egnatuk, Christine M.; Padgett, Stephen W.; Bandong, Bryan B.; Roberts, Kevin E.; Mignerey, Alice C.

doi:10.1007/s10967-018-6064-1

Title: Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

Abstract

Retrospective characterization of a (30 MeV D, Be) neutron source was performed employing multi-foil activation and STAYSL-PNNL. Experimental reaction rates were calculated from gamma spectroscopy measurements of irradiated foils and MCNP provided the guess spectrum. Adjusted spectra were evaluated through activation calculations for a stainless-steel target using FISPACT-II. Adjusted spectra showed limited dependence on the dosimetry reactions and provided minor improvements in activation calculations. Omitting reflected neutrons in the guess spectrum generated poor activation results and the limited number of dosimetry reactions introduced doubt in the adjusted spectra. Furthermore, a dedicated neutron spectrometry experiment and a more detailed simulation is required.

Authors:

Goodell, John J. ^[1]; Egnatuk, Christine M. ^[2]; Padgett, Stephen W. ^[2]; Bandong, Bryan B. ^[2]; Roberts, Kevin E. ^[2]; Mignerey, Alice C. ^[1]

Univ. of Maryland, College Park, MD (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: Tue Aug 07 00:00:00 EDT 2018

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1476860

Report Number(s):: LLNL-JRNL-749383
Journal ID: ISSN 0236-5731; 934355

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Radioanalytical and Nuclear Chemistry

Additional Journal Information:: Journal Volume: 318; Journal Issue: 1; Journal ID: ISSN 0236-5731

Publisher:: Springer

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 43 PARTICLE ACCELERATORS; STAYSL-PNNL; Neutron spectral adjustment; Foil activation; d+Be neutron source; MCNP; FISPACT-II

Citation Formats


                    Goodell, John J., Egnatuk, Christine M., Padgett, Stephen W., Bandong, Bryan B., Roberts, Kevin E., and Mignerey, Alice C. Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique].  United States: N. p., 2018. 
Web.  doi:10.1007/s10967-018-6064-1.

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                    Goodell, John J., Egnatuk, Christine M., Padgett, Stephen W., Bandong, Bryan B., Roberts, Kevin E., & Mignerey, Alice C. Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique].  United States.  https://doi.org/10.1007/s10967-018-6064-1

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                    Goodell, John J., Egnatuk, Christine M., Padgett, Stephen W., Bandong, Bryan B., Roberts, Kevin E., and Mignerey, Alice C. Tue .  
"Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]".  United States.  https://doi.org/10.1007/s10967-018-6064-1.  https://www.osti.gov/servlets/purl/1476860.

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@article{osti_1476860,

  title        = {Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]},

  author       = {Goodell, John J. and Egnatuk, Christine M. and Padgett, Stephen W. and Bandong, Bryan B. and Roberts, Kevin E. and Mignerey, Alice C.},

  abstractNote = {Retrospective characterization of a (30 MeV D, Be) neutron source was performed employing multi-foil activation and STAYSL-PNNL. Experimental reaction rates were calculated from gamma spectroscopy measurements of irradiated foils and MCNP provided the guess spectrum. Adjusted spectra were evaluated through activation calculations for a stainless-steel target using FISPACT-II. Adjusted spectra showed limited dependence on the dosimetry reactions and provided minor improvements in activation calculations. Omitting reflected neutrons in the guess spectrum generated poor activation results and the limited number of dosimetry reactions introduced doubt in the adjusted spectra. Furthermore, a dedicated neutron spectrometry experiment and a more detailed simulation is required.},

  doi          = {10.1007/s10967-018-6064-1},

  journal      = {Journal of Radioanalytical and Nuclear Chemistry},

  number       = 1,

  volume       = 318,

  place        = {United States},

  year         = {Tue Aug 07 00:00:00 EDT 2018},

  month        = {Tue Aug 07 00:00:00 EDT 2018}

}

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Works referenced in this record:

Fundamental Study on Neutron Spectrum Unfolding using Maximum Entropy and Maximum Likelihood Method
journal, January 2011

Maeda, Shigetaka; Tomita, Hideki; Kawarabayashi, Jun
Progress in Nuclear Science and Technology, Vol. 1, Issue 0
DOI: 10.15669/pnst.1.233

Evaluation of the neutron energy spectrum, angular distribution, and yield of the $^{9}$ Be( $d$ , $n$ ) reaction with a thick beryllium target
journal, May 2013

Wei, Z.; Yan, Y.; Yao, Z. E.
Physical Review C, Vol. 87, Issue 5
DOI: 10.1103/physrevc.87.054605

Neutron spectrum determination of d(20)+Be source reaction by the dosimetry foils method
journal, November 2017

Stefanik, Milan; Bem, Pavel; Majerle, Mitja
Radiation Physics and Chemistry, Vol. 140
DOI: 10.1016/j.radphyschem.2017.03.029

Neutron spectrometry—historical review and present status
journal, January 2002

Brooks, F. D.; Klein, H.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 476, Issue 1-2
DOI: 10.1016/S0168-9002(01)01378-X

Characterization of a Thermo Scientific D711 D-T neutron generator located in a low-scatter facility
journal, March 2014

Hayes, John W.; Finn, Erin; Greenwood, Larry
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 741
DOI: 10.1016/j.nima.2013.11.023

Thick-foils activation technique for neutron spectrum unfolding with the MINUIT routine—Comparison with GEANT4 simulations
journal, April 2018

Vagena, E.; Theodorou, K.; Stoulos, S.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 887
DOI: 10.1016/j.nima.2018.01.025

A new neutron energy spectrum unfolding code using a two steps genetic algorithm
journal, March 2016

Shahabinejad, H.; Hosseini, S. A.; Sohrabpour, M.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 811
DOI: 10.1016/j.nima.2015.12.028

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Title: Retrospective neutron spectrum determination of a (30 MeV D, Be) source using the multi-foil activation technique and STAYSL-PNNL [Characterization of neutron spectra from a (30 MeV d, Be) source using the multi-foil activation technique]

Abstract

Citation Formats

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