JPS5725660A - X-ray tube - Google Patents

X-ray tube

Info

Publication number
JPS5725660A
JPS5725660A JP9970180A JP9970180A JPS5725660A JP S5725660 A JPS5725660 A JP S5725660A JP 9970180 A JP9970180 A JP 9970180A JP 9970180 A JP9970180 A JP 9970180A JP S5725660 A JPS5725660 A JP S5725660A
Authority
JP
Japan
Prior art keywords
ray
insulation
blocked
blocking
taken out
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.)
Pending
Application number
JP9970180A
Other languages
Japanese (ja)
Inventor
Ko Sawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9970180A priority Critical patent/JPS5725660A/en
Publication of JPS5725660A publication Critical patent/JPS5725660A/en
Pending 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
    • H01J35/16—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/16—Vessels
    • H01J2235/165—Shielding arrangements
    • H01J2235/168—Shielding arrangements against charged particles

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • X-Ray Techniques (AREA)

Abstract

PURPOSE:To improve the accuracy when employing a X-ray tube depth meter by blocking the irradiation of other than X-ray taken out from a radiation port onto an insulation gas or an insulation oil thereby blocking the dark current and producing the stabilized X-ray output. CONSTITUTION:The dark current (field emission) produced from the surface of a cathode 33 is blocked by a barrier board 29 electrically isolated from a target 36. The beam except the X-ray taken out from a radiation port 31 is blocked by a thick tubular port 30, a casing central section 27a and a barrier member 29 to prevent the irradiation onto the insulator 26 at the outside of the tube or the insulation gas or the insulation oil. While only the target current due to the emission from a filament 35 is detected and fed back to a filament power source 41.
JP9970180A 1980-07-21 1980-07-21 X-ray tube Pending JPS5725660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9970180A JPS5725660A (en) 1980-07-21 1980-07-21 X-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9970180A JPS5725660A (en) 1980-07-21 1980-07-21 X-ray tube

Publications (1)

Publication Number Publication Date
JPS5725660A true JPS5725660A (en) 1982-02-10

Family

ID=14254352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9970180A Pending JPS5725660A (en) 1980-07-21 1980-07-21 X-ray tube

Country Status (1)

Country Link
JP (1) JPS5725660A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003036676A1 (en) * 2001-10-19 2003-05-01 Hamamatsu Photonics K.K. X-ray tube and method of producing the same
EP1611590A2 (en) * 2003-04-09 2006-01-04 Varian Medical Systems, Inc. X-ray tube having an internal radiation shield
JP2008300118A (en) * 2007-05-30 2008-12-11 Yoshida Dental Mfg Co Ltd Micropore focus x-ray tube and micropore focus x-ray tube device
JP2009021032A (en) * 2007-07-10 2009-01-29 Takasago Thermal Eng Co Ltd X-ray generating tube
JP2016110744A (en) * 2014-12-03 2016-06-20 株式会社東芝 X-ray tube device
JP2017041446A (en) * 2013-03-15 2017-02-23 ニコン・メトロロジー・エヌヴェ Electron beam apparatus and x-ray gun
WO2019217024A1 (en) * 2018-05-07 2019-11-14 Moxtek, Inc. X-ray tube single anode bore
US10825638B2 (en) 2018-04-12 2020-11-03 Hamamatsu Photonics K.K. X-ray tube

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003036676A1 (en) * 2001-10-19 2003-05-01 Hamamatsu Photonics K.K. X-ray tube and method of producing the same
US7058161B2 (en) 2001-10-19 2006-06-06 Hamamatsu Photonics K.K. X-ray tube and method of producing the same
EP1611590A2 (en) * 2003-04-09 2006-01-04 Varian Medical Systems, Inc. X-ray tube having an internal radiation shield
EP1611590A4 (en) * 2003-04-09 2009-11-11 Varian Med Sys Inc X-ray tube having an internal radiation shield
JP2008300118A (en) * 2007-05-30 2008-12-11 Yoshida Dental Mfg Co Ltd Micropore focus x-ray tube and micropore focus x-ray tube device
JP2009021032A (en) * 2007-07-10 2009-01-29 Takasago Thermal Eng Co Ltd X-ray generating tube
US9941090B2 (en) 2013-03-15 2018-04-10 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, and rotary vacuum seal
JP2017041446A (en) * 2013-03-15 2017-02-23 ニコン・メトロロジー・エヌヴェ Electron beam apparatus and x-ray gun
US9947501B2 (en) 2013-03-15 2018-04-17 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US9966217B2 (en) 2013-03-15 2018-05-08 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10008357B2 (en) 2013-03-15 2018-06-26 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10020157B2 (en) 2013-03-15 2018-07-10 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10096446B2 (en) 2013-03-15 2018-10-09 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
US10102997B2 (en) 2013-03-15 2018-10-16 Nikon Metrology Nv X-ray source, high-voltage generator, electron beam gun, rotary target assembly, rotary target, and rotary vacuum seal
JP2016110744A (en) * 2014-12-03 2016-06-20 株式会社東芝 X-ray tube device
US10825638B2 (en) 2018-04-12 2020-11-03 Hamamatsu Photonics K.K. X-ray tube
WO2019217024A1 (en) * 2018-05-07 2019-11-14 Moxtek, Inc. X-ray tube single anode bore

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