GB1242462A - Starting arrangements in penning-type ion pumps - Google Patents

Starting arrangements in penning-type ion pumps

Info

Publication number
GB1242462A
GB1242462A GB08003/69A GB1800369A GB1242462A GB 1242462 A GB1242462 A GB 1242462A GB 08003/69 A GB08003/69 A GB 08003/69A GB 1800369 A GB1800369 A GB 1800369A GB 1242462 A GB1242462 A GB 1242462A
Authority
GB
United Kingdom
Prior art keywords
auxiliary
anode
main
envelope
penning
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
GB08003/69A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1242462A publication Critical patent/GB1242462A/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
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
    • H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances

Landscapes

  • Electron Tubes For Measurement (AREA)

Abstract

1,242,462. Ion pumps. THOMSON-CSF. 8 April, 1969 [11 April, 1968], No. 18003/69. Heading HID. A Penning-type ion pump has an auxiliary starting anode 5 capable of operating at a higher temperature than the main anode(s). The main anodes and cathodes (not shown) are located in the field M of magnet pole pieces 2 and 3 and may comprise a system of flat parallel plates which may be apertured. In the arrangement shown the auxiliary anode 5 is a sphere and an auxiliary cathode is formed by an annular portion 6 of the envelope 11, which portion or the whole of the envelope is made of Ti so that the starting electrodes also perform a pumping action. The auxiliary anode 5 is made of Ta or Mo while the main anodes are made of stainless steel or Ti. In an alternative arrangement (Fig. 5, not shown) an auxiliary rod anode is located axially in a cylindrical appendage to the main envelope 11, which appendage is surrounded by toroidal magnets and acts as an auxiliary cathode.
GB08003/69A 1968-04-11 1969-04-08 Starting arrangements in penning-type ion pumps Expired GB1242462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR147816 1968-04-11

Publications (1)

Publication Number Publication Date
GB1242462A true GB1242462A (en) 1971-08-11

Family

ID=8648870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08003/69A Expired GB1242462A (en) 1968-04-11 1969-04-08 Starting arrangements in penning-type ion pumps

Country Status (6)

Country Link
US (1) US3572972A (en)
JP (1) JPS5010003B1 (en)
DE (1) DE1918496A1 (en)
FR (1) FR1583456A (en)
GB (1) GB1242462A (en)
NL (1) NL6905579A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3939571A1 (en) * 1989-11-30 1991-06-06 Leybold Ag Ion pump with multi-anode structure and close-mounted outlet - has anode magnetic circuits integral with outer vessel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176907A (en) * 1962-08-23 1965-04-06 Ca Nat Research Council Ion pump
US3381890A (en) * 1964-12-30 1968-05-07 Nihon Shinku Gijitsu Kabushiki Vacuum apparatus
US3377495A (en) * 1965-06-17 1968-04-09 Varian Associates Glow discharge apparatus having a stacked array of magnets

Also Published As

Publication number Publication date
JPS5010003B1 (en) 1975-04-17
DE1918496A1 (en) 1969-11-13
FR1583456A (en) 1969-10-31
US3572972A (en) 1971-03-30
NL6905579A (en) 1969-10-14

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