Thermal neutron capture cross section for Fe-56(n,gamma)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00474573" target="_blank" >RIV/61389005:_____/17:00474573 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10368614

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.95.014328" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.95.014328</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.95.014328" target="_blank" >10.1103/PhysRevC.95.014328</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal neutron capture cross section for Fe-56(n,gamma)

Popis výsledku v původním jazyce

The Fe-56(n,gamma) thermal neutron capture cross section and the Fe-57 level scheme populated by this reaction have been investigated in this work. Singles gamma-ray spectra were measured with an isotopically enriched Fe-56 target using the guided cold neutron beam at the Budapest Reactor, and gamma gamma-coincidence data were measured with a natural Fe target at the LWR-15 research reactor in Rez, Czech Republic. A detailed level scheme consisting of 448 gamma rays populating/depopulating 97 levels and the capture state in Fe-57 has been constructed, and approximate to 99% of the total transition intensity has been placed. The transition probability of the 352-keV gamma ray was determined to be P-gamma(352) = 11.90 +/- 0.07 per 100 neutron captures. The Fe-57 level scheme is substantially revised from earlier work and approximate to 33 previously assigned levels could not be confirmed while a comparable number of new levels were added. The Fe-57 gamma-ray cross sections were internally calibrated with respect to H-1 and S-32 gamma-ray cross section standards using iron(III) acetylacetonate (C15H21FeO6) and iron pyrite (FeS2) targets. The thermal neutron cross section for production of the 352-keV gamma-ray cross section was determined to be sigma(gamma)(352) = 0.2849 +/- 0.015 b. The total Fe-56(n,gamma) thermal radiative neutron cross section is derived from the 352-keV gamma-ray cross section and transition probability as sigma(0) = 2.394 +/- 0.019 b. A least-squares fit of the gamma rays to the level scheme gives the Fe-57 neutron separation energy S-n = 7646.183 +/- 0.018 keV.

Název v anglickém jazyce

Thermal neutron capture cross section for Fe-56(n,gamma)

Popis výsledku anglicky

The Fe-56(n,gamma) thermal neutron capture cross section and the Fe-57 level scheme populated by this reaction have been investigated in this work. Singles gamma-ray spectra were measured with an isotopically enriched Fe-56 target using the guided cold neutron beam at the Budapest Reactor, and gamma gamma-coincidence data were measured with a natural Fe target at the LWR-15 research reactor in Rez, Czech Republic. A detailed level scheme consisting of 448 gamma rays populating/depopulating 97 levels and the capture state in Fe-57 has been constructed, and approximate to 99% of the total transition intensity has been placed. The transition probability of the 352-keV gamma ray was determined to be P-gamma(352) = 11.90 +/- 0.07 per 100 neutron captures. The Fe-57 level scheme is substantially revised from earlier work and approximate to 33 previously assigned levels could not be confirmed while a comparable number of new levels were added. The Fe-57 gamma-ray cross sections were internally calibrated with respect to H-1 and S-32 gamma-ray cross section standards using iron(III) acetylacetonate (C15H21FeO6) and iron pyrite (FeS2) targets. The thermal neutron cross section for production of the 352-keV gamma-ray cross section was determined to be sigma(gamma)(352) = 0.2849 +/- 0.015 b. The total Fe-56(n,gamma) thermal radiative neutron cross section is derived from the 352-keV gamma-ray cross section and transition probability as sigma(0) = 2.394 +/- 0.019 b. A least-squares fit of the gamma rays to the level scheme gives the Fe-57 neutron separation energy S-n = 7646.183 +/- 0.018 keV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review C

ISSN

2469-9985

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000399784100002

EID výsledku v databázi Scopus

2-s2.0-85015690510