FR2172971B3 - - Google Patents

Info

Publication number
FR2172971B3
FR2172971B3 FR7300484A FR7300484A FR2172971B3 FR 2172971 B3 FR2172971 B3 FR 2172971B3 FR 7300484 A FR7300484 A FR 7300484A FR 7300484 A FR7300484 A FR 7300484A FR 2172971 B3 FR2172971 B3 FR 2172971B3
Authority
FR
France
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
FR7300484A
Other versions
FR2172971A1 (fr
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.)
Philips Nuclear Medicine Inc
Original Assignee
Picker Corp
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 Picker Corp filed Critical Picker Corp
Publication of FR2172971A1 publication Critical patent/FR2172971A1/fr
Application granted granted Critical
Publication of FR2172971B3 publication Critical patent/FR2172971B3/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/045—Activation of assembled cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/064—Details of the emitter, e.g. material or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/066—Details of electron optical components, e.g. cathode cups
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/20—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/26—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
FR7300484A 1972-02-24 1973-01-08 Expired FR2172971B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00228951A US3846006A (en) 1972-02-24 1972-02-24 Method of manufacturing of x-ray tube having thoriated tungsten filament

Publications (2)

Publication Number Publication Date
FR2172971A1 FR2172971A1 (fr) 1973-10-05
FR2172971B3 true FR2172971B3 (fr) 1976-01-09

Family

ID=22859223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7300484A Expired FR2172971B3 (fr) 1972-02-24 1973-01-08

Country Status (5)

Country Link
US (1) US3846006A (fr)
JP (1) JPS48100086A (fr)
CA (1) CA957416A (fr)
DE (1) DE2259526A1 (fr)
FR (1) FR2172971B3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501566A (en) * 1983-09-19 1985-02-26 Technicare Corporation Method for assembling a high vacuum rotating anode X-ray tube
US4838259A (en) * 1986-01-27 1989-06-13 Advanced Pulmonary Technologies, Inc. Multi-frequency jet ventilation technique and apparatus
US7327829B2 (en) * 2004-04-20 2008-02-05 Varian Medical Systems Technologies, Inc. Cathode assembly
US7795792B2 (en) * 2006-02-08 2010-09-14 Varian Medical Systems, Inc. Cathode structures for X-ray tubes
US8559599B2 (en) * 2010-02-04 2013-10-15 Energy Resources International Co., Ltd. X-ray generation device and cathode thereof
US8509385B2 (en) 2010-10-05 2013-08-13 General Electric Company X-ray tube with improved vacuum processing
US9443691B2 (en) 2013-12-30 2016-09-13 General Electric Company Electron emission surface for X-ray generation
CN110168694A (zh) * 2017-12-31 2019-08-23 上海联影医疗科技有限公司 辐射发射设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616431A (en) * 1924-09-20 1927-02-01 Westinghouse Lamp Co Treatment of vacuum devices to remove occluded gases therefrom
US2403745A (en) * 1943-12-21 1946-07-09 Eitel Mccullough Inc Apparatus and method for making tubes
US2591474A (en) * 1950-05-26 1952-04-01 Raytheon Mfg Co Cold cathode discharge device
FR1489755A (fr) * 1966-04-18 1967-07-28 Pat & Visseaux Claude Procédé pour le traitement carburant d'une électrode à l'oxyde de thorium

Also Published As

Publication number Publication date
US3846006A (en) 1974-11-05
FR2172971A1 (fr) 1973-10-05
CA957416A (en) 1974-11-05
JPS48100086A (fr) 1973-12-18
DE2259526A1 (de) 1973-08-30

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