FR2418545A1 - Tube de rontgen dont on a reduit le rayonnement de dispersion - Google Patents

Tube de rontgen dont on a reduit le rayonnement de dispersion

Info

Publication number
FR2418545A1
FR2418545A1 FR7904403A FR7904403A FR2418545A1 FR 2418545 A1 FR2418545 A1 FR 2418545A1 FR 7904403 A FR7904403 A FR 7904403A FR 7904403 A FR7904403 A FR 7904403A FR 2418545 A1 FR2418545 A1 FR 2418545A1
Authority
FR
France
Prior art keywords
electrons
electrode
reduced
reflected
tube whose
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Withdrawn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
FR7904403A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2418545A1 publication Critical patent/FR2418545A1/fr
Withdrawn legal-status Critical Current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
    • H01J35/045—Electrodes for controlling the current of the cathode ray, e.g. control grids
    • 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
    • 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

Landscapes

  • X-Ray Techniques (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

Le rayonnement parasite engendré à l'intérieur de tubes de Röntgen est diminué par l'emploi d'une électrode façonnée et positionnée de façon telle que la plupart des électrons réfléchis dans le foyer parviennent sur ladite électrode. Le potentiel de l'électrode ne dépasse que faiblement celui de la cathode, de sorte que l'énergie des électrons réfléchis suffit pour que ceux-ci parviennent sur l'électrode. L'invention est fondée sur l'idée que le rayonnement extrafocal est provoqué en partie du fait que, parmi les électrons frappant l'anode, certains sont réfléchis et perdent ainsi quelque peu de leur énergie, les électrons en question frappant l'anode en un autre endroit ce qui donne lieu à l'engendrement d'un rayonnement parasite. L'électrode préconisée par l'invention capte lesdits électrons. Application aux appareils radioscopiques utilisés en médecine.
FR7904403A 1978-02-23 1979-02-21 Tube de rontgen dont on a reduit le rayonnement de dispersion Withdrawn FR2418545A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2807735A DE2807735B2 (de) 1978-02-23 1978-02-23 Röntgenröhre mit einem aus Metall bestehenden Röhrenkolben

Publications (1)

Publication Number Publication Date
FR2418545A1 true FR2418545A1 (fr) 1979-09-21

Family

ID=6032724

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7904403A Withdrawn FR2418545A1 (fr) 1978-02-23 1979-02-21 Tube de rontgen dont on a reduit le rayonnement de dispersion

Country Status (8)

Country Link
JP (1) JPS54123891A (fr)
AU (1) AU4452879A (fr)
BR (1) BR7901075A (fr)
DE (1) DE2807735B2 (fr)
ES (1) ES477927A1 (fr)
FR (1) FR2418545A1 (fr)
GB (1) GB2015245A (fr)
IT (1) IT1112012B (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542438C1 (de) * 1995-11-14 1996-11-28 Siemens Ag Röntgenröhre
US7963695B2 (en) 2002-07-23 2011-06-21 Rapiscan Systems, Inc. Rotatable boom cargo scanning system
US8275091B2 (en) 2002-07-23 2012-09-25 Rapiscan Systems, Inc. Compact mobile cargo scanning system
GB0525593D0 (en) 2005-12-16 2006-01-25 Cxr Ltd X-ray tomography inspection systems
US8804899B2 (en) 2003-04-25 2014-08-12 Rapiscan Systems, Inc. Imaging, data acquisition, data transmission, and data distribution methods and systems for high data rate tomographic X-ray scanners
US7949101B2 (en) 2005-12-16 2011-05-24 Rapiscan Systems, Inc. X-ray scanners and X-ray sources therefor
US8837669B2 (en) 2003-04-25 2014-09-16 Rapiscan Systems, Inc. X-ray scanning system
GB0309387D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-Ray scanning
GB0812864D0 (en) 2008-07-15 2008-08-20 Cxr Ltd Coolign anode
GB0309374D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray sources
US8243876B2 (en) 2003-04-25 2012-08-14 Rapiscan Systems, Inc. X-ray scanners
US8451974B2 (en) 2003-04-25 2013-05-28 Rapiscan Systems, Inc. X-ray tomographic inspection system for the identification of specific target items
GB0309371D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-Ray tubes
GB0309385D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray monitoring
GB0309383D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray tube electron sources
US10483077B2 (en) 2003-04-25 2019-11-19 Rapiscan Systems, Inc. X-ray sources having reduced electron scattering
US8094784B2 (en) 2003-04-25 2012-01-10 Rapiscan Systems, Inc. X-ray sources
US9208988B2 (en) 2005-10-25 2015-12-08 Rapiscan Systems, Inc. Graphite backscattered electron shield for use in an X-ray tube
GB0309379D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray scanning
US8223919B2 (en) 2003-04-25 2012-07-17 Rapiscan Systems, Inc. X-ray tomographic inspection systems for the identification of specific target items
US9113839B2 (en) 2003-04-25 2015-08-25 Rapiscon Systems, Inc. X-ray inspection system and method
US6928141B2 (en) 2003-06-20 2005-08-09 Rapiscan, Inc. Relocatable X-ray imaging system and method for inspecting commercial vehicles and cargo containers
US7471764B2 (en) 2005-04-15 2008-12-30 Rapiscan Security Products, Inc. X-ray imaging system having improved weather resistance
US9046465B2 (en) 2011-02-24 2015-06-02 Rapiscan Systems, Inc. Optimization of the source firing pattern for X-ray scanning systems
GB0803641D0 (en) 2008-02-28 2008-04-02 Rapiscan Security Products Inc Scanning systems
GB0803644D0 (en) 2008-02-28 2008-04-02 Rapiscan Security Products Inc Scanning systems
CN102007563B (zh) * 2008-04-17 2013-07-17 皇家飞利浦电子股份有限公司 具有无源离子收集电极的x射线管
GB0809110D0 (en) 2008-05-20 2008-06-25 Rapiscan Security Products Inc Gantry scanner systems
GB0816823D0 (en) 2008-09-13 2008-10-22 Cxr Ltd X-ray tubes
WO2010061332A1 (fr) 2008-11-26 2010-06-03 Philips Intellectual Property & Standards Gmbh Electrode de grille auxiliaire pour tubes à rayons x
GB0901338D0 (en) 2009-01-28 2009-03-11 Cxr Ltd X-Ray tube electron sources
US9218933B2 (en) 2011-06-09 2015-12-22 Rapidscan Systems, Inc. Low-dose radiographic imaging system
US9791590B2 (en) 2013-01-31 2017-10-17 Rapiscan Systems, Inc. Portable security inspection system
JP6852969B2 (ja) * 2015-10-23 2021-03-31 キヤノンメディカルシステムズ株式会社 Ｘ線診断装置
US11551903B2 (en) 2020-06-25 2023-01-10 American Science And Engineering, Inc. Devices and methods for dissipating heat from an anode of an x-ray tube assembly

Also Published As

Publication number Publication date
DE2807735A1 (de) 1979-08-30
GB2015245A (en) 1979-09-05
DE2807735B2 (de) 1979-12-20
AU4452879A (en) 1979-08-30
JPS54123891A (en) 1979-09-26
BR7901075A (pt) 1979-09-11
IT1112012B (it) 1986-01-13
IT7920373A0 (it) 1979-02-20
ES477927A1 (es) 1979-07-01

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Legal Events

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ST Notification of lapse