Deep traps study of radiation-damaged semi-insulating GaAs detectors introduced by neutrons
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F09%3A00165971" target="_blank" >RIV/68407700:21670/09:00165971 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.nima.2009.03.124" target="_blank" >http://dx.doi.org/10.1016/j.nima.2009.03.124</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nima.2009.03.124" target="_blank" >10.1016/j.nima.2009.03.124</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Deep traps study of radiation-damaged semi-insulating GaAs detectors introduced by neutrons
Popis výsledku v původním jazyce
Neutron detectors based on bulk semi-insulating (SI) GaAs represent an interesting and perspective solution due to its relatively high resistance against neutrons. Therefore SI GaAs material seems to be an excellent candidate for fabrication of a neutronimaging detector. Set of detectors based on SI GaAs material was bombarded with various integral neutron fluencies (10(11)-10(15) n cm(-2)). The performance of detectors was evaluated via measured spectra of Am-241 radionuclide sources. From the resultsa significant worsening in detection ability was observed at fluencies exceeding (over) similar to 10(13) n cm(-2). These observations are explained by lattice defects in the base SI GaAs material or in the overall detector structure (electrode interfaces, surface) introduced by neutrons. Photo-induced current transient spectroscopy was used to determine changes in deep level states of bulk SI GaAs base material.
Název v anglickém jazyce
Deep traps study of radiation-damaged semi-insulating GaAs detectors introduced by neutrons
Popis výsledku anglicky
Neutron detectors based on bulk semi-insulating (SI) GaAs represent an interesting and perspective solution due to its relatively high resistance against neutrons. Therefore SI GaAs material seems to be an excellent candidate for fabrication of a neutronimaging detector. Set of detectors based on SI GaAs material was bombarded with various integral neutron fluencies (10(11)-10(15) n cm(-2)). The performance of detectors was evaluated via measured spectra of Am-241 radionuclide sources. From the resultsa significant worsening in detection ability was observed at fluencies exceeding (over) similar to 10(13) n cm(-2). These observations are explained by lattice defects in the base SI GaAs material or in the overall detector structure (electrode interfaces, surface) introduced by neutrons. Photo-induced current transient spectroscopy was used to determine changes in deep level states of bulk SI GaAs base material.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BG - Jaderná, atomová a molekulová fyzika, urychlovače
OECD FORD obor
—
Návaznosti výsledku
Projekt
<a href="/cs/project/LC06041" target="_blank" >LC06041: Příprava, modifikace a charakterizace materiálů energetickým zářením</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Nuclear Instruments and Methods in Physics Research, Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
ISSN
0168-9002
e-ISSN
—
Svazek periodika
2009
Číslo periodika v rámci svazku
607
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
3
Strana od-do
135-137
Kód UT WoS článku
000268987900040
EID výsledku v databázi Scopus
—