GB1076347A - High frequency electron discharge devices having asymmetric self-biased ion draining electrodes - Google Patents

High frequency electron discharge devices having asymmetric self-biased ion draining electrodes

Info

Publication number
GB1076347A
GB1076347A GB40818/65A GB4081865A GB1076347A GB 1076347 A GB1076347 A GB 1076347A GB 40818/65 A GB40818/65 A GB 40818/65A GB 4081865 A GB4081865 A GB 4081865A GB 1076347 A GB1076347 A GB 1076347A
Authority
GB
United Kingdom
Prior art keywords
electrode
electron discharge
frequency electron
high frequency
discharge devices
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
GB40818/65A
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 GB1076347A publication Critical patent/GB1076347A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • 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
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/11—Means for reducing noise
    • 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)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1,076,347. Klystrons; travelling wave tubes. VARIAN ASSOCIATES. Sept. 24, 1965 [Oct. 1, 1964], No. 40818/65. Heading H1D. A high-frequency electron discharge device, e.g. a two-cavity klystron or a travelling wave tube, has an ion draining electrode asymmetrically disposed with respect to the beam axis as described in Specification 1,038,057 in which the electrode is self biased negatively by having a portion made from a material which has an effective secondary emission ratio which is less than one for the energy of the electrons impacting the electrode. The electrode is disposed within the collector electrode and is bombarded by primary and/or secondary electrons. The electrode is preferably a block or layer of tungsten or niobium supported upon an alumina, sapphire or beryllia block. Alternatively graphite or carbon black may be used. The electrode may also be located within the cathode or drift tube regions.
GB40818/65A 1964-10-01 1965-09-24 High frequency electron discharge devices having asymmetric self-biased ion draining electrodes Expired GB1076347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US400679A US3381162A (en) 1964-10-01 1964-10-01 High frequency electron discharge devices having asymmetric self-biased ion drainingelectrodes

Publications (1)

Publication Number Publication Date
GB1076347A true GB1076347A (en) 1967-07-19

Family

ID=23584562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40818/65A Expired GB1076347A (en) 1964-10-01 1965-09-24 High frequency electron discharge devices having asymmetric self-biased ion draining electrodes

Country Status (3)

Country Link
US (1) US3381162A (en)
DE (1) DE1491535B2 (en)
GB (1) GB1076347A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6060832A (en) * 1997-07-24 2000-05-09 Hughes Electronics Corporation Self-biasing collector elements for linear-beam microwave tubes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201630A (en) * 1955-03-30 1965-08-17 Itt Charge storage sheet with tapered apertures

Also Published As

Publication number Publication date
DE1491535A1 (en) 1969-10-23
US3381162A (en) 1968-04-30
DE1491535B2 (en) 1972-01-27

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