Overview of S(T)EM electron detectors with garnet scintillators: Some potentials and limits
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F21%3A00544784" target="_blank" >RIV/68081731:_____/21:00544784 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10435345
Result on the web
<a href="https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jemt.23634" target="_blank" >https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jemt.23634</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/jemt.23634" target="_blank" >10.1002/jemt.23634</a>
Alternative languages
Result language
angličtina
Original language name
Overview of S(T)EM electron detectors with garnet scintillators: Some potentials and limits
Original language description
The paper is focused on a complete configuration and design of a scintillation electron detector in scanning electron and/or scanning transmission electron microscopes (S(T)EM) with garnet scintillators. All processes related to the scintillator and light guide were analyzed. In more detail, excitation electron trajectories and absorbed energy distributions, efficiencies and kinetics of scintillators, as well as the influence of their anti-charging coatings and their substrates, assigned optical properties, and light guide efficiencies of different configurations were presented and discussed. The results indicate problems with low-energy detection below 1 keV when the scandium conductive coating with a thickness of only 3 nm must be used to allow electron penetration without significant losses. It was shown that the short rise and decay time and low afterglow of LuGdGaAG:Ce liquid-phase epitaxy garnet film scintillators guarantee a strong modulation transfer function of the entire imaging system resulting in a contrast transfer ability up to 0.6 lp/pixel. Small film scintillator thicknesses were found to be an advantage due to the low signal self-absorption. The optical absorption coefficients, refractive indices, and the mirror optical reflectance of materials involved in the light transport to the photomultiplier tube photocathode were investigated. The computer-optimized design SCIUNI application was used to configure the optimized light guide system. It was shown that nonoptimized edge-guided systems possess very poor light guiding efficiency as low as 1%, while even very complex optimized ones can achieve more than 20%.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Microscopy Research and Technique
ISSN
1059-910X
e-ISSN
1097-0029
Volume of the periodical
84
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
753-770
UT code for WoS article
000583346100001
EID of the result in the Scopus database
2-s2.0-85096796587