An improved numerical method to compute neutron/gamma deexcitation cascades starting from a high spin state
Abstract
Numerous nuclear processes involve the deexcitation of a compound nucleus through the emission of several neutrons, gamma-rays and/or conversion electrons. The characteristics of such a deexcitation are commonly derived from a total statistical framework often called “Hauser–Feshbach” method. In this work, we highlight a numerical limitation of this kind of method in the case of the deexcitation of a high spin initial state. To circumvent this issue, an improved technique called the Fluctuating Structure Properties (FSP) method is presented. Two FSP algorithms are derived and benchmarked on the calculation of the total radiative width for a thermal neutron capture on 238U. We compare the standard method with these FSP algorithms for the prediction of particle multiplicities in the deexcitation of a high spin level of 143Ba. The gamma multiplicity turns out to be very sensitive to the numerical method. The bias between the two techniques can reach 1.5 γγ/cascade. Lastly, the uncertainty of these calculations coming from the lack of knowledge on nuclear structure is estimated via the FSP method.
- Authors:
-
- CEA, DEN, DER, SPRC, Saint Paul lez Durance (France); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- CEA, DEN, DER, SPRC, Saint Paul lez Durance (France)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1342046
- Alternate Identifier(s):
- OSTI ID: 1247062
- Report Number(s):
- LLNL-JRNL-668707
Journal ID: ISSN 0010-4655
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Computer Physics Communications
- Additional Journal Information:
- Journal Volume: 201; Journal Issue: C; Journal ID: ISSN 0010-4655
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Hauser–Feshbach; statistical model; deexcitation; cascade; FIFRELIN
Citation Formats
Regnier, D., Litaize, O., and Serot, O. An improved numerical method to compute neutron/gamma deexcitation cascades starting from a high spin state. United States: N. p., 2015.
Web. doi:10.1016/j.cpc.2015.12.007.
Regnier, D., Litaize, O., & Serot, O. An improved numerical method to compute neutron/gamma deexcitation cascades starting from a high spin state. United States. https://doi.org/10.1016/j.cpc.2015.12.007
Regnier, D., Litaize, O., and Serot, O. Wed .
"An improved numerical method to compute neutron/gamma deexcitation cascades starting from a high spin state". United States. https://doi.org/10.1016/j.cpc.2015.12.007. https://www.osti.gov/servlets/purl/1342046.
@article{osti_1342046,
title = {An improved numerical method to compute neutron/gamma deexcitation cascades starting from a high spin state},
author = {Regnier, D. and Litaize, O. and Serot, O.},
abstractNote = {Numerous nuclear processes involve the deexcitation of a compound nucleus through the emission of several neutrons, gamma-rays and/or conversion electrons. The characteristics of such a deexcitation are commonly derived from a total statistical framework often called “Hauser–Feshbach” method. In this work, we highlight a numerical limitation of this kind of method in the case of the deexcitation of a high spin initial state. To circumvent this issue, an improved technique called the Fluctuating Structure Properties (FSP) method is presented. Two FSP algorithms are derived and benchmarked on the calculation of the total radiative width for a thermal neutron capture on 238U. We compare the standard method with these FSP algorithms for the prediction of particle multiplicities in the deexcitation of a high spin level of 143Ba. The gamma multiplicity turns out to be very sensitive to the numerical method. The bias between the two techniques can reach 1.5 γγ/cascade. Lastly, the uncertainty of these calculations coming from the lack of knowledge on nuclear structure is estimated via the FSP method.},
doi = {10.1016/j.cpc.2015.12.007},
journal = {Computer Physics Communications},
number = C,
volume = 201,
place = {United States},
year = {Wed Dec 23 00:00:00 EST 2015},
month = {Wed Dec 23 00:00:00 EST 2015}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 22 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
γ-ray cascade transitions in Cd and Cd following resonance capture of epithermal neutrons
journal, May 2013
- Rusev, G.; Jandel, M.; Krtička, M.
- Physical Review C, Vol. 87, Issue 5
Gamma Spectrum from Neutron Capture on Tungsten Isotopes
journal, August 2011
- Hurst, A. M.; Summers, N. C.; Sleaford, B. W.
- Journal of the Korean Physical Society, Vol. 59, Issue 2(3)
The simulation of gamma spectra of 113Cd(n,γ) for neutron resonance spin assignment
journal, November 1995
- Gunsing, F.; Corvi, F.; Postma, H.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 365, Issue 2-3
Neutron Capture on 209Bi: Determination of the Production Ratio of 210mBi/210gBi
journal, August 2011
- Gunsing, F.; Berthoumieux, E.; Borella, A.
- Journal of the Korean Physical Society, Vol. 59, Issue 2(3)
Properties of prompt-fission rays
journal, August 2014
- Stetcu, I.; Talou, P.; Kawano, T.
- Physical Review C, Vol. 90, Issue 2
A Monte Carlo Simulation of Prompt Gamma Emission from Fission Fragments
journal, January 2013
- Regnier, D.; Litaize, O.; Serot, O.
- EPJ Web of Conferences, Vol. 42
Refined treatment of angular momentum in the event-by-event fission model freya
journal, April 2014
- Randrup, J.; Vogt, R.
- Physical Review C, Vol. 89, Issue 4
Interpretation of Isomeric Cross-Section Ratios for ( ) and ( ) Reactions
journal, November 1960
- Huizenga, J. R.; Vandenbosch, R.
- Physical Review, Vol. 120, Issue 4
Angular Momentum of Primary Products Formed in the Spontaneous Fission of
journal, June 1972
- Wilhelmy, J. B.; Cheifetz, E.; Jared, R. C.
- Physical Review C, Vol. 5, Issue 6
Differential angular distribution of prompt gamma rays from spontaneous fission of
journal, August 1980
- Skarsvåg, K.
- Physical Review C, Vol. 22, Issue 2
Fission fragment angular momentum: Ratios of independent yields of isomers of and in thermal-neutron-induced fission of
journal, January 1982
- Datta, T.; Dange, S. P.; Nair, A. G. C.
- Physical Review C, Vol. 25, Issue 1
Angular momentum of fission fragments in low energy fission of actinides
journal, January 2005
- Naik, H.; Dange, S. P.; Singh, R. J.
- Physical Review C, Vol. 71, Issue 1
Prompt spectroscopic studies of fragment nuclei in thermal neutron induced fission of U
journal, June 2012
- Mukhopadhyay, S.; Danu, L. S.; Biswas, D. C.
- Physical Review C, Vol. 85, Issue 6
The Inelastic Scattering of Neutrons
journal, July 1952
- Hauser, Walter; Feshbach, Herman
- Physical Review, Vol. 87, Issue 2
Simulation of γ cascades in complex nuclei with emphasis on assessment of uncertainties of cascade-related quantities
journal, November 1998
- Bečvář, F.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 417, Issue 2-3
Nuclear-charge distribution and delayed-neutron yields for thermal-neutron-induced fission of 235U, 233U, and 239Pu and for spontaneous fission of 252Cf
journal, May 1988
- Wahl, Arthur C.
- Atomic Data and Nuclear Data Tables, Vol. 39, Issue 1
Test of gamma-ray strength functions in nuclear reaction model calculations
journal, May 1990
- Kopecky, J.; Uhl, M.
- Physical Review C, Vol. 41, Issue 5
Large-scale QRPA calculation of E1-strength and its impact on the neutron capture cross section
journal, July 2002
- Goriely, S.; Khan, E.
- Nuclear Physics A, Vol. 706, Issue 1-2
Investigation of phenomenological models for the Monte Carlo simulation of the prompt fission neutron and emission
journal, November 2010
- Litaize, O.; Serot, O.
- Physical Review C, Vol. 82, Issue 5
Preliminary Results of a Full Hauser-feshbach Simulation of the Prompt Neutron and Gamma Emission from Fission Fragments
journal, January 2013
- Regniera, D.; Litaizea, O.; Serota, O.
- Physics Procedia, Vol. 47
RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations
journal, December 2009
- Capote, R.; Herman, M.; Obložinský, P.
- Nuclear Data Sheets, Vol. 110, Issue 12
A Composite Nuclear-Level Density Formula with Shell Corrections
journal, August 1965
- Gilbert, A.; Cameron, A. G. W.
- Canadian Journal of Physics, Vol. 43, Issue 8
De-Excitation of Highly Excited Nuclei
journal, May 1967
- Grover, J. Robb; Gilat, Jacob
- Physical Review, Vol. 157, Issue 4
Emission of Alpha Particles from Nuclei Having Large Angular Momenta
journal, May 1967
- Grover, J. Robb; Gilat, Jacob
- Physical Review, Vol. 157, Issue 4
Dissipation of Energy and Angular Momentum by Emission of Neutrons and Gamma Rays
journal, May 1967
- Grover, J. Robb; Gilat, Jacob
- Physical Review, Vol. 157, Issue 4
Fluctuations of Nuclear Reaction Widths
journal, October 1956
- Porter, C. E.; Thomas, R. G.
- Physical Review, Vol. 104, Issue 2
The AMEDEE Nuclear Structure Database
conference, January 2008
- Hilaire, S.; Girod, M.; Demetriou, P.
- FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR 2, AIP Conference Proceedings
Works referencing / citing this record:
Influence of primary fragment excitation energy and spin distributions on fission observables
journal, January 2018
- Litaize, Olivier; Thulliez, Loïc; Serot, Olivier
- EPJ Web of Conferences, Vol. 169
Improved STEREO simulation with a new gamma ray spectrum of excited gadolinium isotopes using FIFRELIN
journal, October 2019
- Almazán, H.; Bernard, L.; Blanchet, A.
- The European Physical Journal A, Vol. 55, Issue 10