scholarly journals Development and characterization of optical readout well-type glass gas electron multiplier for dose imaging in clinical carbon beams

2021 ◽  
Vol 82 ◽  
pp. 72-78
Author(s):  
Takeshi Fujiwara ◽  
Yusuke Koba ◽  
Yuki Mitsuya ◽  
Riichiro Nakamura ◽  
Ryuta Tatsumoto ◽  
...  
Keyword(s):  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Optical Readout ◽  
Dose Imaging

scholarly journals Characterization of a thermal neutron beam monitor based on gas electron multiplier technology

2014 ◽  
Vol 2014 (8) ◽  
pp. 83H01-0 ◽  
Author(s):  
G. Croci ◽  
C. Cazzaniga ◽  
G. Claps ◽  
M. Tardocchi ◽  
M. Rebai ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Beam ◽  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Beam Monitor ◽  
Thermal Neutron Beam

scholarly journals Optical readout of secondary scintillation from liquid argon generated by a thick gas electron multiplier

2009 ◽  
Vol 179 ◽  
pp. 012014
Author(s):  
P K Lightfoot ◽  
G J Barker ◽  
K Mavrokoridis ◽  
Y A Ramachers ◽  
N J C Spooner
Keyword(s):  
Liquid Argon ◽  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Optical Readout

scholarly journals Optical readout tracking detector concept using secondary scintillation from liquid argon generated by a thick gas electron multiplier

2009 ◽  
Vol 4 (04) ◽  
pp. P04002-P04002 ◽  
Author(s):  
P K Lightfoot ◽  
G J Barker ◽  
K Mavrokoridis ◽  
Y A Ramachers ◽  
N J C Spooner
Keyword(s):  
Liquid Argon ◽  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Optical Readout ◽  
Tracking Detector

Characterization of a high resolution triple Gas Electron Multiplier (GEM) detector

2007 ◽  
Vol 172 ◽  
pp. 234-236 ◽  
Author(s):  
N. Abgrall ◽  
J. Alcaraz ◽  
P. Bene ◽  
A. Blondel ◽  
A. Cervera ◽  
...  
Keyword(s):  
High Resolution ◽  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Gem Detector

Thin cathode glass gas electron multiplier detector for carbon beam dose imaging

2021 ◽  
pp. 1-8
Author(s):  
Riichiro Nakamura ◽  
Takeshi Fujiwara ◽  
Yusuke Koba ◽  
Yuki Mitsuya ◽  
Weishan Chang ◽  
...  
Keyword(s):  
Electron Multiplier ◽  
Gas Electron Multiplier ◽  
Carbon Beam ◽  
Beam Dose ◽  
Dose Imaging

Quantitative nano-characterization of heterogeneous catalysts

1995 ◽  
Vol 53 ◽  
pp. 398-399
Author(s):  
P.A. Crozier ◽  
M. Pan
Keyword(s):  
Heterogeneous Catalysts ◽  
Low Dose ◽  
Imaging Techniques ◽  
Structural Features ◽  
Catalyst Characterization ◽  
New Developments ◽  
Double Phase ◽  
Phase Systems ◽  
Dose Imaging

Heterogeneous catalysts can be of varying complexity ranging from single or double phase systems to complicated mixtures of metals and oxides with additives to help promote chemical reactions, extend the life of the catalysts, prevent poisoning etc. Although catalysis occurs on the surface of most systems, detailed descriptions of the microstructure and chemistry of catalysts can be helpful for developing an understanding of the mechanism by which a catalyst facilitates a reaction. Recent years have seen continued development and improvement of various TEM, STEM and AEM techniques for yielding information on the structure and chemistry of catalysts on the nanometer scale. Here we review some quantitative approaches to catalyst characterization that have resulted from new developments in instrumentation.HREM has been used to examine structural features of catalysts often by employing profile imaging techniques to study atomic details on the surface. Digital recording techniques employing slow-scan CCD cameras have facilitated the use of low-dose imaging in zeolite structure analysis and electron crystallography. Fig. la shows a low-dose image from SSZ-33 zeolite revealing the presence of a stacking fault.

scholarly journals Common Phase and Structure Misidentifications in High-Resolution TEM Characterization of Perovskite Materials

2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Yu-Hao Deng
Keyword(s):  
High Resolution ◽  
Research Field ◽  
Structure Characterization ◽  
Phase Identification ◽  
Lead Iodide ◽  
Perovskite Materials ◽  
High Resolution Tem ◽  
Methylammonium Lead Iodide ◽  
Dose Imaging

High-resolution TEM (HRTEM) is a powerful tool for structure characterization. However, methylammonium lead iodide (MAPbI3) perovskite is highly sensitive to electron beams and easily decomposes into lead iodide (PbI2). Misidentifications, such as PbI2 being incorrectly labeled as perovskite, are widely present in HRTEM characterization and would negatively affect the development of perovskite research field. Here misidentifications in MAPbI3 perovskite are summarized, classified, and corrected based on low-dose imaging and electron diffraction (ED) simulations. Corresponding crystallographic parameters of intrinsic tetragonal MAPbI3 and the confusable hexagonal PbI2 are presented unambiguously. Finally, the method of proper phase identification and some strategies to control the radiation damage in HRTEM are provided. This warning paves the way to avoid future misinterpretations in HRTEM characterization of perovskite and other electron beam-sensitive materials.

scholarly journals Two-phase xenon emission detector with electron multiplier and optical readout by multipixel avalanche Geiger photodiodes

2013 ◽  
Vol 8 (05) ◽  
pp. P05017-P05017 ◽  
Author(s):  
D Yu Akimov ◽  
A V Akindinov ◽  
I S Alexandrov ◽  
V A Belov ◽  
A I Bolozdynya ◽  
...  
Keyword(s):  
Two Phase ◽  
Electron Multiplier ◽  
Emission Detector ◽  
Optical Readout
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