FR2454696A1 - Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end - Google Patents

Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end

Info

Publication number
FR2454696A1
FR2454696A1 FR7909765A FR7909765A FR2454696A1 FR 2454696 A1 FR2454696 A1 FR 2454696A1 FR 7909765 A FR7909765 A FR 7909765A FR 7909765 A FR7909765 A FR 7909765A FR 2454696 A1 FR2454696 A1 FR 2454696A1
Authority
FR
France
Prior art keywords
electron
anode
closed
filament
plates
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.)
Granted
Application number
FR7909765A
Other languages
French (fr)
Other versions
FR2454696B1 (en
Inventor
Michel Feidt
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7909765A priority Critical patent/FR2454696A1/en
Publication of FR2454696A1 publication Critical patent/FR2454696A1/en
Application granted granted Critical
Publication of FR2454696B1 publication Critical patent/FR2454696B1/fr
Granted 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
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • H01J41/14—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes
    • H01J41/16—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes using gettering substances
    • 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
    • H01J41/04—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of thermionic cathodes

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

An orbital electronic device comprises, in an evacuated chamber, a doubled-walled cylindrical cathode (2) forming an annular chamber (24) through which a cryogenic fluid is pumped. A metal grill (4) is supported inside the anode and closed at each end by a respective biassed conductor plate (6,8) one of which, adjacent a work chamber, is a grill pervious to gas. A filament anode (10) is supported coaxially within the metal grill (4) in insulating supports in the end plates. A thermo-emissive element (12) e.g. tungsten, is located adjacent the lower plate and getter material (22) is provided on the anode (10). For use as an ionisation gauge the voltages VB and VA of the thermo-emissive filament and anode are in the ratio 0.04:1, the voltage of the end plates is negligible compared to the anode.
FR7909765A 1979-04-18 1979-04-18 Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end Granted FR2454696A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7909765A FR2454696A1 (en) 1979-04-18 1979-04-18 Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7909765A FR2454696A1 (en) 1979-04-18 1979-04-18 Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end

Publications (2)

Publication Number Publication Date
FR2454696A1 true FR2454696A1 (en) 1980-11-14
FR2454696B1 FR2454696B1 (en) 1982-07-23

Family

ID=9224437

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909765A Granted FR2454696A1 (en) 1979-04-18 1979-04-18 Orbital electron cryogenic device - has filament anode and electron emitter in cylindrical cathode, electron volume being closed by plates at each end

Country Status (1)

Country Link
FR (1) FR2454696A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537770A2 (en) * 1991-10-17 1993-04-21 Granville-Phillips Company Ionization gauge and method of using and calibrating same
US5422573A (en) * 1990-04-11 1995-06-06 Granville-Phillips Company Ionization gauge and method of using and calibrating same
WO2006094687A1 (en) * 2005-03-04 2006-09-14 Inficon Gmbh Vacuum measuring gauge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468648A (en) * 1963-02-26 1967-02-10 Wisconsin Alumni Res Found Electron orbiting device
US3330472A (en) * 1965-10-01 1967-07-11 Nat Res Corp Vacuum device
US3339106A (en) * 1965-05-28 1967-08-29 Canadian Patents Dev Ionization vacuum pump of the orbitron type having a porous annular grid electrode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468648A (en) * 1963-02-26 1967-02-10 Wisconsin Alumni Res Found Electron orbiting device
US3339106A (en) * 1965-05-28 1967-08-29 Canadian Patents Dev Ionization vacuum pump of the orbitron type having a porous annular grid electrode
US3330472A (en) * 1965-10-01 1967-07-11 Nat Res Corp Vacuum device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EXBK/69 *
EXBK/70 *
EXBK/77 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296817A (en) * 1990-04-11 1994-03-22 Granville-Phillips Company Ionization gauge and method of using and calibrating same
US5422573A (en) * 1990-04-11 1995-06-06 Granville-Phillips Company Ionization gauge and method of using and calibrating same
EP0537770A2 (en) * 1991-10-17 1993-04-21 Granville-Phillips Company Ionization gauge and method of using and calibrating same
EP0537770A3 (en) * 1991-10-17 1993-07-28 Granville-Phillips Company Ionization gauge and method of using and calibrating same
WO2006094687A1 (en) * 2005-03-04 2006-09-14 Inficon Gmbh Vacuum measuring gauge

Also Published As

Publication number Publication date
FR2454696B1 (en) 1982-07-23

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Legal Events

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