56 pages matching mass spectrometer in this book
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Some Performance Details for Ion Sources of the Coggeshall Pattern
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adjustment alined assembly axial axis beam structure central ion ray circuit collector slit collimation constant ion current cracked carbon curve deflexion Dependence of peak diameter diffusion pump Dimensional Metrology draw-out voltage effect electric electron gun electrostatic emission field strength filament fringing field fringing flux gas canal gauss increased insulated ion accelerating voltage ion beam ion gun system ion slit ion source ionic transmission ionization chamber mass number mass spectrometer maximum ion current measured National Physical Laboratory observed obtained operation peak ion intensity peak shape plate pole pieces pole-gap potential arrangements potentiometer radius resistors respect rotary pump sector field sector-field instrument semi-angle of divergence sensitivity shown in fig slit widths source arrangement source magnetic field source region source slit spectrometer body spherical aberration spread stability tapped total accelerating voltage total ion accelerating trajectories trochoidal electron beam vacuum value of Vx valve variations voltage ratios Weston cell zero