GB978775A - Ultra high vacuum cold cathode ionization gauge - Google Patents

Ultra high vacuum cold cathode ionization gauge

Info

Publication number
GB978775A
GB978775A GB4540162A GB4540162A GB978775A GB 978775 A GB978775 A GB 978775A GB 4540162 A GB4540162 A GB 4540162A GB 4540162 A GB4540162 A GB 4540162A GB 978775 A GB978775 A GB 978775A
Authority
GB
United Kingdom
Prior art keywords
cathode
anode
envelope
cold cathode
ionization gauge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4540162A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geophysics Corp of America
Original Assignee
Geophysics Corp of America
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geophysics Corp of America filed Critical Geophysics Corp of America
Publication of GB978775A publication Critical patent/GB978775A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

978,775. Ionization manometers. GEOPHYSICS CORPORATION OF AMERICA. Nov. 30, 1962 [Dec. 6, 1961], No. 45401/62. Heading H1D. A cold cathode ionization gauge has a metal envelope, a cylindrical anode disposed within the envelope, a cathode concentrically arranged within the anode, and means for applying a unidirectional magnetic field along the anode - cathode axis, wherein the cathode has conical portions which are slanted relatively to the direction of the magnetic field. As shown, the spoolshaped cathode 30 is supported by two axially disposed insulating spheres 40, 42 which are seated on recesses 66, 70 and 36, 41 provided in the envelope and cathode respectively. The anode is similarly supported by insulating spheres which are seated in four holes, e.g. 12, 18 provided in the cylindrical anode. Leads 79, 86 are connected to the cathode and anode respectively. Rings 51, 53 are preferably provided in close proximity to the ends of the cathode and assist to initiate the cold cathode discharge. The envelope may be made of iron of a low permeability, thereby forming part of a magnetic circuit which has a minimum magnetic air gap.
GB4540162A 1961-12-06 1963-11-30 Ultra high vacuum cold cathode ionization gauge Expired GB978775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15737261A 1961-12-06 1961-12-06

Publications (1)

Publication Number Publication Date
GB978775A true GB978775A (en) 1964-12-23

Family

ID=22563440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4540162A Expired GB978775A (en) 1961-12-06 1963-11-30 Ultra high vacuum cold cathode ionization gauge

Country Status (2)

Country Link
DE (1) DE1473445B2 (en)
GB (1) GB978775A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1698878A1 (en) * 2005-03-04 2006-09-06 Inficon GmbH Electrode configuration and pressure measuring apparatus
US7768267B2 (en) 2007-07-11 2010-08-03 Brooks Automation, Inc. Ionization gauge with a cold electron source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1698878A1 (en) * 2005-03-04 2006-09-06 Inficon GmbH Electrode configuration and pressure measuring apparatus
WO2006094687A1 (en) * 2005-03-04 2006-09-14 Inficon Gmbh Vacuum measuring gauge
US7352187B2 (en) 2005-03-04 2008-04-01 Inficon Gmbh Vacuum measuring gauge
US7768267B2 (en) 2007-07-11 2010-08-03 Brooks Automation, Inc. Ionization gauge with a cold electron source

Also Published As

Publication number Publication date
DE1473445A1 (en) 1969-01-09
DE1473445B2 (en) 1970-06-25

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