Measurement of cross-sections of yttrium (n,xn) threshold reactions by means of gamma spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00486426" target="_blank" >RIV/61389005:_____/14:00486426 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.phpro.2014.10.018" target="_blank" >http://dx.doi.org/10.1016/j.phpro.2014.10.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.phpro.2014.10.018" target="_blank" >10.1016/j.phpro.2014.10.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of cross-sections of yttrium (n,xn) threshold reactions by means of gamma spectroscopy

Popis výsledku v původním jazyce

Neutron activation and gamma spectrometry are usable also for the determination of cross-sections of different neutron reactions. We have studied the cross-section of yttrium ( n,xn) threshold reactions using quasi mono-energetic neutron source based on the reaction on Li-7 target at Nuclear Physics Institute of ASCR in Rez. Yttrium ( n, xn) threshold reactions are suitable candidates for fast neutron field measurement by activation detectors. Fast neutron field monitoring is necessary already today at a wide range of accelerator facilities and will gain on importance in future fast reactors of generation IV, accelerator transmutation systems or fusion reactors. The knowledge of the cross-sections is crucial for such purpose. Unfortunately, the cross-section is sufficiently known only for Y-89( n,2n)Y-88 reaction. For higher orders of reactions there are almost no experimental data. Special attention was paid to the Y-89(n,3n)Y-87 reaction. The nuclei are produced, both in the ground state with half-life 79.8 hours and in the isomeric state with half-life 13.38 hours. The isomer decays mainly through the gamma transition to the ground state, the beta decay of the excited state is negligible within our accuracy. The cross-sections of both Y-87 productions were analyzed.

Název v anglickém jazyce

Measurement of cross-sections of yttrium (n,xn) threshold reactions by means of gamma spectroscopy

Popis výsledku anglicky

Neutron activation and gamma spectrometry are usable also for the determination of cross-sections of different neutron reactions. We have studied the cross-section of yttrium ( n,xn) threshold reactions using quasi mono-energetic neutron source based on the reaction on Li-7 target at Nuclear Physics Institute of ASCR in Rez. Yttrium ( n, xn) threshold reactions are suitable candidates for fast neutron field measurement by activation detectors. Fast neutron field monitoring is necessary already today at a wide range of accelerator facilities and will gain on importance in future fast reactors of generation IV, accelerator transmutation systems or fusion reactors. The knowledge of the cross-sections is crucial for such purpose. Unfortunately, the cross-section is sufficiently known only for Y-89( n,2n)Y-88 reaction. For higher orders of reactions there are almost no experimental data. Special attention was paid to the Y-89(n,3n)Y-87 reaction. The nuclei are produced, both in the ground state with half-life 79.8 hours and in the isomeric state with half-life 13.38 hours. The isomer decays mainly through the gamma transition to the ground state, the beta decay of the excited state is negligible within our accuracy. The cross-sections of both Y-87 productions were analyzed.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Physics Procedia

ISBN

—

ISSN

1875-3892

e-ISSN

—

Počet stran výsledku

5

Strana od-do

114-118

Název nakladatele

Elsevier Science BV

Místo vydání

Amsterdam

Místo konání akce

Belgrade

Datum konání akce

24. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000380878100017