The Detection of Single Positive Ions, Electrons and Photons by a Secondary Electron Multiplier

1939 ◽  
Vol 55 (10) ◽  
pp. 966-971 ◽  
Author(s):  
James S. Allen
Keyword(s):  
Secondary Electron ◽  
Electron Multiplier ◽  
Positive Ions ◽  
Secondary Electron Multiplier ◽  
Single Positive

scholarly journals Ceramic Secondary Electron Multiplier

Shinku ◽  
1974 ◽  
Vol 17 (7) ◽  
pp. 235-241
Author(s):  
Hiroshi YAMAMOTO ◽  
Shigeo YOSHINO
Keyword(s):  
Secondary Electron ◽  
Electron Multiplier ◽  
Secondary Electron Multiplier

scholarly journals Сопряжение координатно-чувствительного детектора на основе приборов с зарядовой связью для регистрации ионов с портативным статическим масс-спектрографом

2018 ◽  
Vol 44 (13) ◽  
pp. 96
Author(s):  
В.Т. Коган ◽  
Ю.В. Чичагов ◽  
А.А. Богданов ◽  
А.С. Антонов ◽  
Ю.В. Тубольцев ◽  
...  
Keyword(s):  
United States ◽  
Secondary Electron ◽  
Measurement Data ◽  
Ioffe Physical Technical Institute ◽  
Sensitive Detector ◽  
Technical Institute ◽  
Electron Multiplier ◽  
Secondary Electron Multiplier ◽  
Mass Spectrograph ◽  
Academy Of Sciences

AbstractAn IDS 2030 IonCCD coordinate-sensitive detector (Analytical/CMS Field Products) is interfaced with a small-sized mass spectrograph developed at the Ioffe Physical Technical Institute, Russian Academy of Sciences. The measurement data obtained with the mass spectrograph using an IonCCD detector and a Magnum-5901-37029PS channel secondary electron multiplier (Photonics USA Inc., United States) are compared. The results of measurements are discussed, and the prospects for using the IonCCD coupled with a microchannel plate are assessed.

scholarly journals Bildung von van der Waals-Komplexen organischer Moleküle

1972 ◽  
Vol 27 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Hans Knof ◽  
Volker Hausen ◽  
Dieter Krafft
Keyword(s):  
Gas Phase ◽  
Quantitative Measurement ◽  
Secondary Electron ◽  
Electron Attachment ◽  
Dipole Interaction ◽  
Ion Source ◽  
Organic Substances ◽  
Electron Multiplier ◽  
Secondary Electron Multiplier ◽  
Electron Pulses

Abstract An electron attachment ion source was modified in order to be used for quantitative measurement of pure organic substances at pressures up to 1.5 ·10-3 Torr in the space around the ion source. The ion intensity was determined by counting the electron pulses produced by single ions in the secondary electron multiplier. This resulted in higher sensitivities. The measurements of different organic compounds showed that molecular polymers are held together primarily by hydro-gen bonding and by dipole interaction. No molecular polymers could be identified in nonpolar substances. The pressure dependence of the ion intensities indicates that the molecular polymers originate from the gas phase of the reservoir. During the ionization process the hydroxide loses its hydrogen atom as was shown with deuterated samples.

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