GB1041450A - Magnetically confined glow discharge apparatus - Google Patents

Magnetically confined glow discharge apparatus

Info

Publication number
GB1041450A
GB1041450A GB31016/64A GB3101664A GB1041450A GB 1041450 A GB1041450 A GB 1041450A GB 31016/64 A GB31016/64 A GB 31016/64A GB 3101664 A GB3101664 A GB 3101664A GB 1041450 A GB1041450 A GB 1041450A
Authority
GB
United Kingdom
Prior art keywords
glow discharge
magnetically confined
kilogauss
compartments
lies
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
GB31016/64A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1041450A publication Critical patent/GB1041450A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/14—Magnetic means for controlling the discharge
    • 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

Landscapes

  • Electron Tubes For Measurement (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1,041,450. Ion pumps and ionization manometers. VARIAN ASSOCIATES. Aug. 4, 1964 [July 29, 1963], No. 31016/64. Heading HID. The pumping speed or sensitivity of a magnetically confined glow discharge device such as a vacuum pump or gauge having a cellular anode 26 with compartments of diameter or minimum internal dimension d located between cathode plates 32 and traversed by a magnetic field of intensity B is maintained at pressures below 10<SP>-7</SP> torr by arranging that the product Bd is greater than 1 kilogauss-inch, and B lies within the range 0À5 to 3À0 kilogauss. Preferably d lies in the range 1¢ to 2¢ inches. The length h of the compartments is from 1 to 1À5 times d. The device described is otherwise as described in Specification 873,024.
GB31016/64A 1963-07-29 1964-08-04 Magnetically confined glow discharge apparatus Expired GB1041450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US298109A US3258194A (en) 1963-07-29 1963-07-29 Magnetically confined glow discharge apparatus

Publications (1)

Publication Number Publication Date
GB1041450A true GB1041450A (en) 1966-09-07

Family

ID=23149070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31016/64A Expired GB1041450A (en) 1963-07-29 1964-08-04 Magnetically confined glow discharge apparatus

Country Status (3)

Country Link
US (1) US3258194A (en)
DE (1) DE1489222B2 (en)
GB (1) GB1041450A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2249373B1 (en) * 2008-02-14 2017-08-02 National Institute of Information and Communications Technology Ion pump system and electromagnetic field generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL249138A (en) * 1959-03-06

Also Published As

Publication number Publication date
DE1489222B2 (en) 1971-01-21
DE1489222A1 (en) 1969-01-16
US3258194A (en) 1966-06-28

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