New light from old minerals: scintillation in engineered willemite compositions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00643565" target="_blank" >RIV/67985882:_____/25:00643565 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00643565

Výsledek na webu

<a href="https://hdl.handle.net/11104/0373449" target="_blank" >https://hdl.handle.net/11104/0373449</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/3157/1/012024" target="_blank" >10.1088/1742-6596/3157/1/012024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New light from old minerals: scintillation in engineered willemite compositions

Popis výsledku v původním jazyce

The glass samples from glass-forming area of the ZnO-Al2O3-SiO2 phase diagram were prepared by standard melt-quenching method at 1400–1600 °C temperature range for 10–12 h. The subsequent annealing with a heating ramp of 5 °C/min to 850 °C yielded glass-ceramics nature of samples. X-ray diffraction measurements identified the presence of amorphous phase for as-prepared samples and two crystalline phases, including monoclinic Zn2SiO4, and rhombohedral Zn2SiO4 (willemite), after annealing. The scintillation and luminescence properties of prepared glass and annealed glass-ceramics were excitation (40 kV), overcoming the standard Bi4Ge3O12 scintillator intensity by more than 160%, was discovered after annealing while as-prepared glass samples exhibited negligible luminescence response to the X-ray exposure. The corresponding scintillation decay with leading component in sub-nanosecond scale was detected for annealed samples. The bandgap of willemite was estimated from the photoluminescence excitation spectra to be at 5.85 eV, photoluminescence emission shows the band in UV region with corresponding photoluminescence decay times spanning from units to tens of nanosecond. The impact of annealing conditions on the material´s structural and optical properties is discussed in detail.

Název v anglickém jazyce

New light from old minerals: scintillation in engineered willemite compositions

Popis výsledku anglicky

The glass samples from glass-forming area of the ZnO-Al2O3-SiO2 phase diagram were prepared by standard melt-quenching method at 1400–1600 °C temperature range for 10–12 h. The subsequent annealing with a heating ramp of 5 °C/min to 850 °C yielded glass-ceramics nature of samples. X-ray diffraction measurements identified the presence of amorphous phase for as-prepared samples and two crystalline phases, including monoclinic Zn2SiO4, and rhombohedral Zn2SiO4 (willemite), after annealing. The scintillation and luminescence properties of prepared glass and annealed glass-ceramics were excitation (40 kV), overcoming the standard Bi4Ge3O12 scintillator intensity by more than 160%, was discovered after annealing while as-prepared glass samples exhibited negligible luminescence response to the X-ray exposure. The corresponding scintillation decay with leading component in sub-nanosecond scale was detected for annealed samples. The bandgap of willemite was estimated from the photoluminescence excitation spectra to be at 5.85 eV, photoluminescence emission shows the band in UV region with corresponding photoluminescence decay times spanning from units to tens of nanosecond. The impact of annealing conditions on the material´s structural and optical properties is discussed in detail.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GA23-05507S" target="_blank" >GA23-05507S: Pokročilé anorganické nanokompozity pro distribuované senzory škodlivého záření</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics: Conference Series

ISBN

—

ISSN

1742-6588

e-ISSN

1742-6596

Počet stran výsledku

11

Strana od-do

"Roč. 3157"

Název nakladatele

IoP Science

Místo vydání

Bristol

Místo konání akce

Pavlov

Datum konání akce

8. 9. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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