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GB1038057A - High frequency electron discharge device - Google Patents

High frequency electron discharge device

Info

Publication number
GB1038057A
GB1038057A GB24969/64A GB2496964A GB1038057A GB 1038057 A GB1038057 A GB 1038057A GB 24969/64 A GB24969/64 A GB 24969/64A GB 2496964 A GB2496964 A GB 2496964A GB 1038057 A GB1038057 A GB 1038057A
Authority
GB
United Kingdom
Prior art keywords
electrode
ion
collector structure
discharge device
electron discharge
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
GB24969/64A
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 GB1038057A publication Critical patent/GB1038057A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection

Landscapes

  • Microwave Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

1,038,057. Klystrons; ion-getter pumps. VARIAN ASSOCIATES. June 16, 1964 [July 8, 1963], No. 24969/64. Heading H1D. A high-frequency electron discharge device, e.g. a klystron, has an ion-draining electrode 21 asymmetrically disposed with respect to the beam axis within the beam collector structure 3. The electrode is composed, at least in part, from the group of reactive materials consisting of titanium, strontium, zirconium and any other transition elements of the 4th, 5th and 6th groups of the Periodic Table including the rare earths. Bombardment of the electrode by electrons or ions causes sputtering and a gasabsorbing substance is formed which vacuum pumps the device. Secondary electrons produced within the collector by beam bombardment are prevented from leaving the collector structure by the asymmetric field 34 produced by the negatively biased ion-drain electrode. The collector structure has an inclined bore 15 communicating with an exhaust tubulation 16.
GB24969/64A 1963-07-08 1964-06-16 High frequency electron discharge device Expired GB1038057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US293443A US3293481A (en) 1963-07-08 1963-07-08 High frequency electron discharge device

Publications (1)

Publication Number Publication Date
GB1038057A true GB1038057A (en) 1966-08-03

Family

ID=23129099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24969/64A Expired GB1038057A (en) 1963-07-08 1964-06-16 High frequency electron discharge device

Country Status (5)

Country Link
US (1) US3293481A (en)
DE (1) DE1491514B2 (en)
GB (1) GB1038057A (en)
NL (1) NL147277B (en)
SE (1) SE305906B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448324A (en) * 1966-07-28 1969-06-03 Teledyne Inc Linear beam tube having an insulated,symmetrically located,electrode of reactive material in the collector assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE469199A (en) * 1945-09-15
FR1147407A (en) * 1953-10-05 1957-11-25 Varian Associates Electron discharge device
FR1235416A (en) * 1959-05-26 1960-07-08 Csf Improvements to traveling wave tubes type o

Also Published As

Publication number Publication date
US3293481A (en) 1966-12-20
NL147277B (en) 1975-09-15
NL6407551A (en) 1965-01-11
DE1491514A1 (en) 1969-02-13
DE1491514B2 (en) 1971-04-29
SE305906B (en) 1968-11-11

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