scholarly journals The Discharge Characteristics of a Cold Cathode Ionization Gauge with a Central wire Electrode (2nd Report)

Shinku ◽  
1961 ◽  
Vol 4 (6) ◽  
pp. 248-251
Author(s):  
Munezo TAKAI ◽  
Tetsuro MATSUDA
Keyword(s):  
Cold Cathode ◽  
Wire Electrode ◽  
Discharge Characteristics ◽  
Ionization Gauge ◽  
Central Wire

THE MAGNETRON GAUGE: A COLD-CATHODE VACUUM GAUGE

1959 ◽  
Vol 37 (11) ◽  
pp. 1260-1271 ◽  
Author(s):  
P. A. Redhead
Keyword(s):  
Magnetic Field ◽  
Anode Voltage ◽  
Axial Magnetic Field ◽  
Ion Current ◽  
Cold Cathode ◽  
Linear Region ◽  
Vacuum Gauge ◽  
Ionization Gauge ◽  
The Relationship ◽  
Unit Pressure

A cold-cathode ionization gauge with axial magnetic field is described which is capable of measuring pressure in the range 10−3to 10−12 mm Hg and is primarily useful in the range above 5 × 10−10 mm Hg. The gauge is operated with an anode voltage of 6 kilovolts and a magnetic field of 1000 gauss. The relationship between ion current and pressure is linear in the pressure range 10−4 to 5 × 10−10 mm Hg; at lower pressures the relationship i+ = cP1.7 obtains. In the linear region the ion current per unit pressure is given by i+ (amperes) [Formula: see text](mm Hg) for nitrogen (i.e., a sensitivity about 45 times greater than obtainable with a thermionic triode gauge).

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