Growth and luminescent properties of Cs2HfCl6 scintillators doped with alkaline earth metals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00500635" target="_blank" >RIV/68378271:_____/18:00500635 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/TNS.2018.2848474" target="_blank" >http://dx.doi.org/10.1109/TNS.2018.2848474</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TNS.2018.2848474" target="_blank" >10.1109/TNS.2018.2848474</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Growth and luminescent properties of Cs2HfCl6 scintillators doped with alkaline earth metals

Popis výsledku v původním jazyce

Nondoped Cs2HfCl6 (CHC) and alkaline earth metal-doped CHC (AE:CHC) crystals were grown by the vertical Bridgman–Stockbarger method. The spectra of the AE:CHC under X-ray excitation were similar to those for the AE-free crystal. Thus, AE doping did not change emission wavelength of CHC. We determined the light outputs and energy resolutions of nondoped CHC and AE:CHC by measuring pulse-height spectra under 662-keV gamma-ray excitation of a 137Cs source. Nondoped CHC had a light output of 44000 photons/MeV and energy resolution of 5.2%, the 0.5 at% Sr:CHC had a light output of only 28000 photons/MeV and energy resolution of 10%. Scintillation decay also did not change. The nonproportional response values of light output versus gamma-ray energy did not improve in AE:CHC either. The doped AEs can be responsible for creation of defect trap levels which would hamper the carrier transport in CHC structure.

Název v anglickém jazyce

Growth and luminescent properties of Cs2HfCl6 scintillators doped with alkaline earth metals

Popis výsledku anglicky

Nondoped Cs2HfCl6 (CHC) and alkaline earth metal-doped CHC (AE:CHC) crystals were grown by the vertical Bridgman–Stockbarger method. The spectra of the AE:CHC under X-ray excitation were similar to those for the AE-free crystal. Thus, AE doping did not change emission wavelength of CHC. We determined the light outputs and energy resolutions of nondoped CHC and AE:CHC by measuring pulse-height spectra under 662-keV gamma-ray excitation of a 137Cs source. Nondoped CHC had a light output of 44000 photons/MeV and energy resolution of 5.2%, the 0.5 at% Sr:CHC had a light output of only 28000 photons/MeV and energy resolution of 10%. Scintillation decay also did not change. The nonproportional response values of light output versus gamma-ray energy did not improve in AE:CHC either. The doped AEs can be responsible for creation of defect trap levels which would hamper the carrier transport in CHC structure.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GJ18-17555Y" target="_blank" >GJ18-17555Y: Podvojné halogenidy alkalického a čtyřmocného kovu: nové scintilační materiály pro radiační detektory</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Nuclear Science

ISSN

0018-9499

e-ISSN

—

Svazek periodika

65

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

2169-2173

Kód UT WoS článku

000442365000032

EID výsledku v databázi Scopus

2-s2.0-85048599664