guest ::
| Home > Conference materials > Papers > Performance of YAG:Ce Scintillators for Low-Energy Electron Detectors in S(T)EM |
Original title:
Performance of YAG:Ce Scintillators for Low-Energy Electron Detectors in S(T)EM
Authors: Lalinský, Ondřej ; Bok, Jan ; Schauer, Petr ; Frank, Luděk
Document type: Papers
Conference/Event: International Microscopy Congres /18./, Praha (CZ), 2014-09-07 / 2014-09-12
Year: 2014
Language: eng
Abstract: Cerium activated single crystals of yttrium aluminium garnet (YAG:Ce) Y3-xCexAl5O12 are widely used as scintillators in electron detectors for S(T)EM. Nowadays, it is sometimes necessary to detect low-energy electrons without post-acceleration. In such cases, extremely sensitive detectors are required that are able to detect even electrons with energies of only hundreds of eV while avoiding charging of the scintillator surface. However, commonly used scintillators strongly lose their light yield with the decrease of the incident electron energy. Moreover, a thinner conductive layer on the scintillator surface has to be used to allow low-energy electrons to pass through. Possible charging of the surface negatively affects its cathodoluminescence (CL) light yield. The low-energy electron excitation takes place closer to the scintillator surface where damage can be expected owing to its preparation, which also reduces the CL light yield. The aim was to study the influence of the scintillator and its conductive layer on the low-energy electron detection efficiency.
Keywords: cathodoluminescence; electron detector; low-energy electron; scintillator; SEM; single crystal; STEM; YAG:Ce
Project no.: TE01020118 (CEP), EE.2.3.20.0103
Funding provider: GA TA ČR, GA MŠk
Host item entry: 18th International Microscopy Congres. Proceedings, ISBN 978-80-260-6720-7
Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0238244
Permalink: http://www.nusl.cz/ntk/nusl-177530
The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers
Authors: Lalinský, Ondřej ; Bok, Jan ; Schauer, Petr ; Frank, Luděk
Document type: Papers
Conference/Event: International Microscopy Congres /18./, Praha (CZ), 2014-09-07 / 2014-09-12
Year: 2014
Language: eng
Abstract: Cerium activated single crystals of yttrium aluminium garnet (YAG:Ce) Y3-xCexAl5O12 are widely used as scintillators in electron detectors for S(T)EM. Nowadays, it is sometimes necessary to detect low-energy electrons without post-acceleration. In such cases, extremely sensitive detectors are required that are able to detect even electrons with energies of only hundreds of eV while avoiding charging of the scintillator surface. However, commonly used scintillators strongly lose their light yield with the decrease of the incident electron energy. Moreover, a thinner conductive layer on the scintillator surface has to be used to allow low-energy electrons to pass through. Possible charging of the surface negatively affects its cathodoluminescence (CL) light yield. The low-energy electron excitation takes place closer to the scintillator surface where damage can be expected owing to its preparation, which also reduces the CL light yield. The aim was to study the influence of the scintillator and its conductive layer on the low-energy electron detection efficiency.
Keywords: cathodoluminescence; electron detector; low-energy electron; scintillator; SEM; single crystal; STEM; YAG:Ce
Project no.: TE01020118 (CEP), EE.2.3.20.0103
Funding provider: GA TA ČR, GA MŠk
Host item entry: 18th International Microscopy Congres. Proceedings, ISBN 978-80-260-6720-7
Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0238244
Permalink: http://www.nusl.cz/ntk/nusl-177530
The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers
Record created 2014-11-13, last modified 2021-11-24