IONIZATION VACUUM GAUGE WITH X-RAY SHIELDING AND ION REFLECTING MEANS
United States Patent 3465189
US Patent References:
Nude ion gage assembly
- - 3274326
Vacuum gauge having an chi-ray trap and a shield
- - 3292078
Ionization vacuum gauge for use in the 10-6 to 1 torr range
- - 3319117
Ionization gauge having a photocurrent suppressor electrode
- - 3341727
Field emission ionization gauge with restricted line of sight between field emissionanode and ion collector
- - 3378712
Nude ion gage assembly
- - 3274326
Vacuum gauge having an chi-ray trap and a shield
- - 3292078
Ionization vacuum gauge for use in the 10-6 to 1 torr range
- - 3319117
Ionization gauge having a photocurrent suppressor electrode
- - 3341727
Field emission ionization gauge with restricted line of sight between field emissionanode and ion collector
- - 3378712
Inventors:
Redhead, Paul Aveling
Publication Date:
09/02/1969
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Assignee:
Canadian, Patents Dev
Primary Class:
Other Classes:
324/462, 315/108, 250/515.100
International Classes:
H01J41/04; H01J41/00; H01J7/16; H01J17/24; H01J13/28
US Patent References:
| 3394301 | Method and apparatus for determining composition and pressure of a gas at low pressure |