DE4026301A1 - Elektronenemitter einer roentgenroehre - Google Patents

Elektronenemitter einer roentgenroehre

Info

Publication number
DE4026301A1
DE4026301A1 DE4026301A DE4026301A DE4026301A1 DE 4026301 A1 DE4026301 A1 DE 4026301A1 DE 4026301 A DE4026301 A DE 4026301A DE 4026301 A DE4026301 A DE 4026301A DE 4026301 A1 DE4026301 A1 DE 4026301A1
Authority
DE
Germany
Prior art keywords
electron
electron emitter
emitting material
ray tube
emitter
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.)
Withdrawn
Application number
DE4026301A
Other languages
German (de)
English (en)
Inventor
Clemens Dr Ing Fiebiger
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE4026301A priority Critical patent/DE4026301A1/de
Priority to US07/738,877 priority patent/US5170422A/en
Priority to JP1991072436U priority patent/JPH0498253U/ja
Publication of DE4026301A1 publication Critical patent/DE4026301A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • X-Ray Techniques (AREA)
  • Cold Cathode And The Manufacture (AREA)
DE4026301A 1990-08-20 1990-08-20 Elektronenemitter einer roentgenroehre Withdrawn DE4026301A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4026301A DE4026301A1 (de) 1990-08-20 1990-08-20 Elektronenemitter einer roentgenroehre
US07/738,877 US5170422A (en) 1990-08-20 1991-08-01 Electron emitter for an x-ray tube
JP1991072436U JPH0498253U (enExample) 1990-08-20 1991-08-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4026301A DE4026301A1 (de) 1990-08-20 1990-08-20 Elektronenemitter einer roentgenroehre

Publications (1)

Publication Number Publication Date
DE4026301A1 true DE4026301A1 (de) 1992-02-27

Family

ID=6412561

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4026301A Withdrawn DE4026301A1 (de) 1990-08-20 1990-08-20 Elektronenemitter einer roentgenroehre

Country Status (3)

Country Link
US (1) US5170422A (enExample)
JP (1) JPH0498253U (enExample)
DE (1) DE4026301A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004372A1 (de) * 2011-02-18 2011-11-17 Siemens Aktiengesellschaft Kathode

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2959745B2 (ja) * 1994-09-27 1999-10-06 株式会社テクノス 表面欠陥評価装置
DE19513290C1 (de) * 1995-04-07 1996-07-25 Siemens Ag Röntgenröhre mit einem Niedrigtemperatur-Emitter
US5633907A (en) * 1996-03-21 1997-05-27 General Electric Company X-ray tube electron beam formation and focusing
US6115453A (en) * 1997-08-20 2000-09-05 Siemens Aktiengesellschaft Direct-Heated flats emitter for emitting an electron beam
US7280636B2 (en) * 2003-10-03 2007-10-09 Illinois Institute Of Technology Device and method for producing a spatially uniformly intense source of x-rays
US7042982B2 (en) * 2003-11-19 2006-05-09 Lucent Technologies Inc. Focusable and steerable micro-miniature x-ray apparatus
US7327829B2 (en) 2004-04-20 2008-02-05 Varian Medical Systems Technologies, Inc. Cathode assembly
DE112006002464T5 (de) 2005-09-14 2008-07-24 Littelfuse, Inc., Des Plaines Gasgefüllter Überspannungsableiter, aktivierende Verbindung, Zündstreifen und Herstellungsverfahren dafür
DE102006024437B4 (de) * 2006-05-24 2012-08-09 Siemens Ag Röntgenstrahler
US20080095317A1 (en) * 2006-10-17 2008-04-24 General Electric Company Method and apparatus for focusing and deflecting the electron beam of an x-ray device
US20080253522A1 (en) * 2007-04-11 2008-10-16 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Tool associated with compton scattered X-ray visualization, imaging, or information provider
US7623625B2 (en) * 2007-04-11 2009-11-24 Searete Llc Compton scattered X-ray visualization, imaging, or information provider with scattering event locating
US7711089B2 (en) * 2007-04-11 2010-05-04 The Invention Science Fund I, Llc Scintillator aspects of compton scattered X-ray visualization, imaging, or information providing
US20080253527A1 (en) * 2007-04-11 2008-10-16 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Limiting compton scattered x-ray visualizing, imaging, or information providing at particular regions
US20080253627A1 (en) * 2007-04-11 2008-10-16 Searete LLC, a limited liability corporation of Compton scattered X-ray visualization, imaging, or information provider using image combining
US20080253525A1 (en) * 2007-04-11 2008-10-16 Boyden Edward S Compton scattered x-ray visualizing, imaging, or information providing of at least some dissimilar matter
US8837677B2 (en) * 2007-04-11 2014-09-16 The Invention Science Fund I Llc Method and system for compton scattered X-ray depth visualization, imaging, or information provider
US8041006B2 (en) * 2007-04-11 2011-10-18 The Invention Science Fund I Llc Aspects of compton scattered X-ray visualization, imaging, or information providing
US8077829B2 (en) * 2008-09-25 2011-12-13 Varian Medical Systems, Inc. Electron emitter apparatus and method of assembly
US11899159B2 (en) * 2019-04-02 2024-02-13 Schlumberger Technology Corporation Regulated charged particle beam emitter systems and methods

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE836527C (de) * 1946-03-05 1952-04-15 Csf Verfahren zur Herstellung von Kathoden fuer Elektronenroehren
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter
DE1614295A1 (de) * 1966-12-23 1970-08-20 Philips Nv Indirekt heizbare thermionische Kathode und Verfahren zur Herstellung einer derartigen Kathode
US4012656A (en) * 1974-12-09 1977-03-15 Norman Ralph L X-ray tube
DE2337344B2 (de) * 1973-07-23 1977-05-12 Siemens AG, 1000 Berlin und 8000 München Emissionselektrode bestehend aus einem traegerkoerper, der eine die elektronenemission beguenstigende masse traegt
DE2650656A1 (de) * 1976-11-05 1978-05-11 Philips Patentverwaltung Kathode fuer elektronenroehren
US4150318A (en) * 1978-04-17 1979-04-17 Gte Sylvania Incorporated Low mass, indirectly heated, fast warm-up heater-cathode assembly
US4151440A (en) * 1978-04-17 1979-04-24 Gte Sylvania Incorporated Cathode heater assembly for electron discharge device
US4291252A (en) * 1978-11-29 1981-09-22 Hitachi, Ltd. Electron tube cathode
DE2727907C2 (enExample) * 1977-06-21 1987-11-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US4730353A (en) * 1984-05-31 1988-03-08 Kabushiki Kaisha Toshiba X-ray tube apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB949312A (en) * 1959-06-11 1964-02-12 Hilger & Watts Ltd Improvements in and relating to x-ray tubes
GB1294383A (en) * 1970-02-11 1972-10-25 Thorn Lighting Ltd Discharge lamps having improved thermionic cathodes
NL167796C (nl) * 1972-05-30 1982-01-18 Philips Nv Werkwijze voor het vervaardigen van een met lanthaanhexaboride geactiveerde kathode voor een elektrische ontladingsbuis.
JPS5178695A (en) * 1974-12-28 1976-07-08 Tokyo Shibaura Electric Co x senkan
JPS6065425A (ja) * 1983-09-20 1985-04-15 Nec Corp 直熱含浸型陰極構体
EP0143222B1 (de) * 1983-09-30 1987-11-11 BBC Aktiengesellschaft Brown, Boveri & Cie. Glühkathode mit hohem Emissionsvermögen für eine Elektronenröhre und Verfahren zu deren Herstellung
DE3516955A1 (de) * 1985-05-10 1986-11-13 Elektroschmelzwerk Kempten GmbH, 8000 München Polykristalline sinterkoerper auf basis von lanthanhexaborid und verfahren zu ihrer herstellung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE836527C (de) * 1946-03-05 1952-04-15 Csf Verfahren zur Herstellung von Kathoden fuer Elektronenroehren
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter
DE1614295A1 (de) * 1966-12-23 1970-08-20 Philips Nv Indirekt heizbare thermionische Kathode und Verfahren zur Herstellung einer derartigen Kathode
DE2337344B2 (de) * 1973-07-23 1977-05-12 Siemens AG, 1000 Berlin und 8000 München Emissionselektrode bestehend aus einem traegerkoerper, der eine die elektronenemission beguenstigende masse traegt
US4012656A (en) * 1974-12-09 1977-03-15 Norman Ralph L X-ray tube
DE2650656A1 (de) * 1976-11-05 1978-05-11 Philips Patentverwaltung Kathode fuer elektronenroehren
DE2727907C2 (enExample) * 1977-06-21 1987-11-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US4150318A (en) * 1978-04-17 1979-04-17 Gte Sylvania Incorporated Low mass, indirectly heated, fast warm-up heater-cathode assembly
US4151440A (en) * 1978-04-17 1979-04-24 Gte Sylvania Incorporated Cathode heater assembly for electron discharge device
US4291252A (en) * 1978-11-29 1981-09-22 Hitachi, Ltd. Electron tube cathode
US4730353A (en) * 1984-05-31 1988-03-08 Kabushiki Kaisha Toshiba X-ray tube apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004372A1 (de) * 2011-02-18 2011-11-17 Siemens Aktiengesellschaft Kathode

Also Published As

Publication number Publication date
JPH0498253U (enExample) 1992-08-25
US5170422A (en) 1992-12-08

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee