Miniature Mass Spectrometers for Hydrogen Isotopic Analyses

2003 ◽  
Author(s):  
W A Spencer
Keyword(s):  
Mass Spectrometers ◽  
Isotopic Analyses ◽  
Miniature Mass Spectrometers

Glow discharge electron impact ionization source for miniature mass spectrometers

2007 ◽  
Vol 42 (5) ◽  
pp. 675-680 ◽  
Author(s):  
Liang Gao ◽  
Qingyu Song ◽  
Robert J. Noll ◽  
Jason Duncan ◽  
R. Graham Cooks ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Ionization Source ◽  
Mass Spectrometers ◽  
Miniature Mass Spectrometers ◽  
Electron Impact Ionization Source

Millimeter-Scale PIG Source for Miniature Mass Spectrometers

2012 ◽  
Vol 31 (6) ◽  
pp. 566-568
Author(s):  
Mohammad Reza Babapour Ghadikolaee
Keyword(s):  
Mass Spectrometers ◽  
Miniature Mass Spectrometers

Miniature Mass Spectrometers

2009 ◽  
Vol 2 (1) ◽  
pp. 187-214 ◽  
Author(s):  
Zheng Ouyang ◽  
R. Graham Cooks
Keyword(s):  
Mass Spectrometers ◽  
Miniature Mass Spectrometers

A review of the development and application of space miniature mass spectrometers

Vacuum ◽  
2018 ◽  
Vol 155 ◽  
pp. 108-117 ◽  
Author(s):  
Zhengyi Ren ◽  
Meiru Guo ◽  
Yongjun Cheng ◽  
Yongjun Wang ◽  
Wenjun Sun ◽  
...  
Keyword(s):  
Mass Spectrometers ◽  
Miniature Mass Spectrometers

Monitoring and quantitative evaluation of Faraday cup deterioration in a thermal ionization mass spectrometer using multidynamic analyses of laboratory standards

2021 ◽  
Author(s):  
Yankun Di ◽  
Zefeng Li ◽  
Yuri Amelin
Keyword(s):  
Isotopic Ratio ◽  
Ionization Mass ◽  
Mass Spectrometers ◽  
Faraday Cup ◽  
Long Term Stability ◽  
Isotopic Analyses ◽  
Thermal Ionization Mass Spectrometer ◽  
Cross Calibration ◽  
Multiple Detectors

Accurate and precise isotopic ratio determinations using multi-collector (MC) mass spectrometers rely on accurate cross-calibration and long-term stability of the efficiencies of the multiple detectors. Isotopic analyses at part per...

Trial production of γ-type energy filtering TEM

1995 ◽  
Vol 53 ◽  
pp. 604-605
Author(s):  
Y. Taniguchi ◽  
E. Nakazawa ◽  
S. Taya
Keyword(s):  
Magnetic Energy ◽  
Electron Optics ◽  
Electron Microscopic ◽  
Mass Spectrometers ◽  
Ion Optics ◽  
Energy Filtering ◽  
New Information ◽  
New Type ◽  
Fringing Fields

Imaging energy filters can add new information to electron microscopic images with respect to energy-axis, so-called electron spectroscopic imaging (ESI). Recently, many good results have been reported using this imaging technique. ESI also allows high-contrast observation of unstained biological samples, becoming a trend of the field of morphology. We manufactured a new type of energy filter as a trial production. This energy filter consists of two magnets, and we call γ-filter since the trajectory of electrons shows ‘γ’-shape inside the filter. We evaluated the new energyγ-filter TEM with the γ-filter.Figure 1 shows schematic view of the electron optics of the γ-type energy filter. For the determination of the electron-optics of the γ-type energy filter, we used the TRIO (Third Order Ion Optics) program which has been developed for the design of high resolution mass spectrometers. The TRIO takes the extended fringing fields (EFF) into consideration. EFF makes it difficult to design magnetic energy filters with magnetic sector fields.

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