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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F11%3A10106184%21RIV12-MSM-11320___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. This can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDS libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of discrete line spectra and cross sections for over 260 isotopes that was developed as part of an IAEA Coordinated Research Project. EGAF has been used to improve the capture gamma production in ENDF libraries. For medium to heavy nuclei the quasi continuum contribution to the gamma cascades is not; experimentally resolved. The continuum contains up to 90% of all the decay energy and is modeled here with the statistical nuclear structure code DICEBOX. This code also provides a consistency check of the level scheme nuclear structure evaluation. The calculated continuum is of sufficient accuracy to include in the ENDF libraries. This analysis also determines new total thermal capture cross sections and provides an improved RIPL database. For higher energy neutron capture there is less experimental data. available making benchmarking of the modeling codes more difficult. We use CASINO, a version of DICEBOX that is modified for this purpose. This can be used to simulate the neutron capture at incident neutron energies up to 20 MeV to improve the gamma-ray spectrum in neutron data, libraries used for transport; modeling of unknown assemblies. The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. This can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDS libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of discrete line spectra and cross sections for over 260 isotopes that was developed as part of an IAEA Coordinated Research Project. EGAF has been used to improve the capture gamma production in ENDF libraries. For medium to heavy nuclei the quasi continuum contribution to the gamma cascades is not; experimentally resolved. The continuum contains up to 90% of all the decay energy and is modeled here with the statistical nuclear structure code DICEBOX. This code also provides a consistency check of the level scheme nuclear structure evaluation. The calculated continuum is of sufficient accuracy to include in the ENDF libraries. This analysis also determines new total thermal capture cross sections and provides an improved RIPL database. For higher energy neutron capture there is less experimental data. available making benchmarking of the modeling codes more difficult. We use CASINO, a version of DICEBOX that is modified for this purpose. This can be used to simulate the neutron capture at incident neutron energies up to 20 MeV to improve the gamma-ray spectrum in neutron data, libraries used for transport; modeling of unknown assemblies.
dcterms:title
Capture Gamma-ray Libraries for Nuclear Applications Capture Gamma-ray Libraries for Nuclear Applications
skos:prefLabel
Capture Gamma-ray Libraries for Nuclear Applications Capture Gamma-ray Libraries for Nuclear Applications
skos:notation
RIV/00216208:11320/11:10106184!RIV12-MSM-11320___
n13:predkladatel
n18:orjk%3A11320
n3:aktivita
n17:Z
n3:aktivity
Z(MSM0021620859)
n3:cisloPeriodika
2
n3:dodaniDat
n16:2012
n3:domaciTvurceVysledku
n8:7876009
n3:druhVysledku
n10:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
189141
n3:idVysledku
RIV/00216208:11320/11:10106184
n3:jazykVysledku
n6:eng
n3:klicovaSlova
LANSCE; Detector; DANCE; Using; keV; 100; Spectra; Gamma-emission; Section; Cross; Neutron-capture; 238U; Measurement
n3:klicoveSlovo
n5:Detector n5:238U n5:LANSCE n5:Using n5:keV n5:Gamma-emission n5:Cross n5:Section n5:Measurement n5:Spectra n5:100 n5:DANCE n5:Neutron-capture
n3:kodStatuVydavatele
KR - Korejská republika
n3:kontrolniKodProRIV
[22F886A808D5]
n3:nazevZdroje
Journal of the Korean Physical Society
n3:obor
n12:BG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
11
n3:rokUplatneniVysledku
n16:2011
n3:svazekPeriodika
59
n3:tvurceVysledku
Summers, N. Krtička, Milan Sleaford, B. Escher, J.
n3:wos
000294080700004
n3:zamer
n4:MSM0021620859
s:issn
0374-4884
s:numberOfPages
5
n9:doi
10.3938/jkps.59.1473
n19:organizacniJednotka
11320