Prospective scintillators for low-energy BSE detectors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F16%3A00465106" target="_blank" >RIV/68081731:_____/16:00465106 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/9783527808465.EMC2016.6239" target="_blank" >http://dx.doi.org/10.1002/9783527808465.EMC2016.6239</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/9783527808465.EMC2016.6239" target="_blank" >10.1002/9783527808465.EMC2016.6239</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prospective scintillators for low-energy BSE detectors

Popis výsledku v původním jazyce

Cerium activated bulk single crystals of yttrium aluminium garnet (YAG:Ce) Cex:Y3-xAl5O12 are widely used as scintillators for the detection of backscattered electrons (BSE). In the electron microscopy research of nanomaterials, biomaterials or semiconductors, low energy (units of keV) electron beam imaging is often necessary. Because BSE detectors are mostly non-accelerating or low-accelerating, electrons with approximately the same energy as primary beam (PB) have to be detected. However, commonly used YAG:Ce single crystal strongly loses its light yield (LY) with the decrease of the PB energy. As possible available alternatives for this application, bulk single crystals of YAlO3:Ce (YAP:Ce) and CRY018 can be predicted. However, similar LY sink can be expected also with these scintillators.nThere are two main reasons, why this occurs. Firstly, slower electrons don’t have enough energy to pass through the relatively thick conductive layer on the scintillator surface. Therefore, thinner conductive layer has to be used. Secondly, commonly available scintillators suffer from structural defects that are created mostly due to surface damage (as a result of its grinding, polishing, purification or contamination) or already during the own bulk single crystal growth.n

Název v anglickém jazyce

Prospective scintillators for low-energy BSE detectors

Popis výsledku anglicky

Cerium activated bulk single crystals of yttrium aluminium garnet (YAG:Ce) Cex:Y3-xAl5O12 are widely used as scintillators for the detection of backscattered electrons (BSE). In the electron microscopy research of nanomaterials, biomaterials or semiconductors, low energy (units of keV) electron beam imaging is often necessary. Because BSE detectors are mostly non-accelerating or low-accelerating, electrons with approximately the same energy as primary beam (PB) have to be detected. However, commonly used YAG:Ce single crystal strongly loses its light yield (LY) with the decrease of the PB energy. As possible available alternatives for this application, bulk single crystals of YAlO3:Ce (YAP:Ce) and CRY018 can be predicted. However, similar LY sink can be expected also with these scintillators.nThere are two main reasons, why this occurs. Firstly, slower electrons don’t have enough energy to pass through the relatively thick conductive layer on the scintillator surface. Therefore, thinner conductive layer has to be used. Secondly, commonly available scintillators suffer from structural defects that are created mostly due to surface damage (as a result of its grinding, polishing, purification or contamination) or already during the own bulk single crystal growth.n

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

EMC2016. The 16th European Microscopy Congress. Proceedings

ISBN

9783527808465

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

1160-1161

Název nakladatele

Wiley

Místo vydání

Oxford

Místo konání akce

Lyon

Datum konání akce

28. 8. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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