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GB1262408A - X-ray generating assembly and system - Google Patents

X-ray generating assembly and system

Info

Publication number
GB1262408A
GB1262408A GB40822/70A GB4082270A GB1262408A GB 1262408 A GB1262408 A GB 1262408A GB 40822/70 A GB40822/70 A GB 40822/70A GB 4082270 A GB4082270 A GB 4082270A GB 1262408 A GB1262408 A GB 1262408A
Authority
GB
United Kingdom
Prior art keywords
control electrode
cathode
ion
ion shield
emissive
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
GB40822/70A
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.)
Qorvo US Inc
Original Assignee
Watkins Johnson Co
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 Watkins Johnson Co filed Critical Watkins Johnson Co
Publication of GB1262408A publication Critical patent/GB1262408A/en
Expired 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
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • 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

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

1,262,408. X-ray tubes. WATKINSJOHNSON CO. 25 Aug., 1970 [2 Sept., 1969], No. 40822/70. Heading H1D. Ion bombardment of the emissive surface of the cathode of an X-ray tube is reduced by making the surface annular and providing an ion shield in its centre. In Fig. 1 the cathode comprises a nickel cup 46 coated round its rim 44 with an emissive alkaline earth oxide. The cathode is surrounded by a control electrode 49 in the form of an apertured diaphragm connected by three struts (not shown) to a central ion shield 54; the edges 56 and 57 of the control electrode and ion shield are preferably tapered at an angle of about 22À5 degrees and define an annular path for the beam 50. The control electrode 49 may be connected via a diode 59 to a variable bias source 58 and may be connected to a pulse generator 62 if pulse modulation of the beam is required.
GB40822/70A 1969-09-02 1970-08-25 X-ray generating assembly and system Expired GB1262408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85439369A 1969-09-02 1969-09-02

Publications (1)

Publication Number Publication Date
GB1262408A true GB1262408A (en) 1972-02-02

Family

ID=25318571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40822/70A Expired GB1262408A (en) 1969-09-02 1970-08-25 X-ray generating assembly and system

Country Status (4)

Country Link
US (1) US3691417A (en)
DE (1) DE2042413A1 (en)
FR (1) FR2060772A5 (en)
GB (1) GB1262408A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892989A (en) * 1971-03-08 1975-07-01 Watkins Johnson Co Convergent flow hollow beam X-ray gun construction
US3751701A (en) * 1971-03-08 1973-08-07 Watkins Johnson Co Convergent flow hollow beam x-ray gun with high average power
FR2406890A1 (en) * 1977-10-21 1979-05-18 Radiologie Cie Gle METHOD AND DEVICE FOR IMPROVING THE RADIOLOGICAL DEFINITION OF X-RAY TUBE FIREPLACES
US5044006A (en) * 1990-04-27 1991-08-27 Cyrulnik Reuven A Microwave frequency modulation of x-ray beam for radio therapy treatment system
AU6857796A (en) 1995-08-24 1997-03-19 Interventional Innovations Corporation X-ray catheter
US6377846B1 (en) 1997-02-21 2002-04-23 Medtronic Ave, Inc. Device for delivering localized x-ray radiation and method of manufacture
DE69823406T2 (en) * 1997-02-21 2005-01-13 Medtronic AVE, Inc., Santa Rosa X-ray device provided with a strain structure for local irradiation of the interior of a body
US5854822A (en) * 1997-07-25 1998-12-29 Xrt Corp. Miniature x-ray device having cold cathode
US6108402A (en) * 1998-01-16 2000-08-22 Medtronic Ave, Inc. Diamond vacuum housing for miniature x-ray device
US6069938A (en) * 1998-03-06 2000-05-30 Chornenky; Victor Ivan Method and x-ray device using pulse high voltage source
US6289079B1 (en) 1999-03-23 2001-09-11 Medtronic Ave, Inc. X-ray device and deposition process for manufacture
US8126118B2 (en) * 2006-08-10 2012-02-28 Koninklijke Philips Electronics N.V. X-ray tube and method of voltage supplying of an ion deflecting and collecting setup of an X-ray tube
US7737424B2 (en) * 2007-06-01 2010-06-15 Moxtek, Inc. X-ray window with grid structure
US8498381B2 (en) 2010-10-07 2013-07-30 Moxtek, Inc. Polymer layer on X-ray window
WO2009045915A2 (en) 2007-09-28 2009-04-09 Brigham Young University Carbon nanotube assembly
US9305735B2 (en) 2007-09-28 2016-04-05 Brigham Young University Reinforced polymer x-ray window
DE102008006620A1 (en) * 2008-01-29 2009-08-06 Smiths Heimann Gmbh X-ray generator and its use in an X-ray examination or X-ray inspection
US8247971B1 (en) 2009-03-19 2012-08-21 Moxtek, Inc. Resistively heated small planar filament
US7983394B2 (en) 2009-12-17 2011-07-19 Moxtek, Inc. Multiple wavelength X-ray source
US8526574B2 (en) 2010-09-24 2013-09-03 Moxtek, Inc. Capacitor AC power coupling across high DC voltage differential
US8804910B1 (en) 2011-01-24 2014-08-12 Moxtek, Inc. Reduced power consumption X-ray source
US8750458B1 (en) 2011-02-17 2014-06-10 Moxtek, Inc. Cold electron number amplifier
US8929515B2 (en) 2011-02-23 2015-01-06 Moxtek, Inc. Multiple-size support for X-ray window
US9076628B2 (en) 2011-05-16 2015-07-07 Brigham Young University Variable radius taper x-ray window support structure
US9174412B2 (en) 2011-05-16 2015-11-03 Brigham Young University High strength carbon fiber composite wafers for microfabrication
US8989354B2 (en) 2011-05-16 2015-03-24 Brigham Young University Carbon composite support structure
US8761344B2 (en) 2011-12-29 2014-06-24 Moxtek, Inc. Small x-ray tube with electron beam control optics
US9173623B2 (en) 2013-04-19 2015-11-03 Samuel Soonho Lee X-ray tube and receiver inside mouth

Also Published As

Publication number Publication date
DE2042413A1 (en) 1971-03-04
US3691417A (en) 1972-09-12
FR2060772A5 (en) 1971-06-18

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