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WO2008123301A1 - X-ray generator employing hemimorphic crystal - Google Patents

X-ray generator employing hemimorphic crystal Download PDF

Info

Publication number
WO2008123301A1
WO2008123301A1 PCT/JP2008/055710 JP2008055710W WO2008123301A1 WO 2008123301 A1 WO2008123301 A1 WO 2008123301A1 JP 2008055710 W JP2008055710 W JP 2008055710W WO 2008123301 A1 WO2008123301 A1 WO 2008123301A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum vessel
hemimorphic crystal
electric field
hemimorphic
ray generator
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.)
Ceased
Application number
PCT/JP2008/055710
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshiaki Ito
Shinzo Yoshikado
Yoshikazu Nakanishi
Shinji Fukao
Shigeo Ito
Takeshi Tonegawa
Yohei Fujimura
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.)
Futaba Corp
Doshisha Co Ltd
Kyoto University NUC
Original Assignee
Futaba Corp
Doshisha Co Ltd
Kyoto University NUC
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 Futaba Corp, Doshisha Co Ltd, Kyoto University NUC filed Critical Futaba Corp
Priority to JP2009509140A priority Critical patent/JP5019302B2/en
Publication of WO2008123301A1 publication Critical patent/WO2008123301A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/08—Deviation, concentration or focusing of the beam by electric or magnetic means
    • G21K1/087—Deviation, concentration or focusing of the beam by electric or magnetic means by electrical means
    • 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
    • H01J35/065—Field emission, photo emission or secondary emission cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/062—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/08—Targets (anodes) and X-ray converters
    • H01J2235/086—Target geometry

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • X-Ray Techniques (AREA)

Abstract

An X-ray generator includes: a vacuum vessel (1) containing a low-pressure gas atmosphere; at least one hemimorphic crystal arranged in the vacuum vessel; temperature increasing means (3, 7, 8, 9) for increasing the temperature of the hemimorphic crystal; a cold cathode electron source (4) arranged within a reach of the electric field generated from the hemimorphic crystal thermally excited by the temperature increasing means in the vacuum vessel and emitting electrons by electric field emission; and a metal target (6) for generating X-rays arranged within a reach of the electric field generated from the hemimorphic crystal in the vacuum vessel. With this compact configuration, it is possible to stably generate X-rays having an intensity above a certain level for a long time without requiring a large-scale device such as a high-voltage power source or a vacuum pumping device. Moreover, no heat is generated when an electron source is operating and no contamination is caused in the vacuum vessel.
PCT/JP2008/055710 2007-03-26 2008-03-26 X-ray generator employing hemimorphic crystal Ceased WO2008123301A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009509140A JP5019302B2 (en) 2007-03-26 2008-03-26 X-ray generator using heteropolar crystal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007079570 2007-03-26
JP2007-079570 2007-03-26

Publications (1)

Publication Number Publication Date
WO2008123301A1 true WO2008123301A1 (en) 2008-10-16

Family

ID=39830790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055710 Ceased WO2008123301A1 (en) 2007-03-26 2008-03-26 X-ray generator employing hemimorphic crystal

Country Status (2)

Country Link
JP (1) JP5019302B2 (en)
WO (1) WO2008123301A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010116709A1 (en) * 2009-04-07 2010-10-14 有限会社アドテックセンシングリサーチ X-ray generator and composite device using the same and x-ray generating method
WO2012005338A3 (en) * 2010-07-09 2012-03-15 有限会社アドテックセンシングリサーチ X-ray generating device
WO2013058342A1 (en) * 2011-10-18 2013-04-25 株式会社Ｂｓｒ Charged particle emission device and x-ray generator using the device
DE202013005768U1 (en) 2013-06-21 2013-07-22 Technische Universität Bergakademie Freiberg Device for generating X-radiation by means of pyroelectric material
US8755493B2 (en) 2009-08-07 2014-06-17 The Regents Of The University Of California Apparatus for producing X-rays for use in imaging
US10712296B2 (en) 2016-12-23 2020-07-14 Orion Engineering Limited Handheld material analyser

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951444B1 (en) 2009-10-19 2012-08-17 Stork Food Systems France DEVICE FOR PRODUCING LOTS OF PRODUCTS FOR THEIR LOADING IN RECEPTACLES
JP5682918B2 (en) * 2011-01-20 2015-03-11 独立行政法人産業技術総合研究所 Elemental quantitative analysis method and elemental quantitative analyzer by X-ray absorption edge method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001176378A (en) * 1999-12-20 2001-06-29 Sharp Corp Cold cathode and method of manufacturing the same
JP2004087304A (en) * 2002-08-27 2004-03-18 Mitsubishi Electric Corp Cold cathode electron source and display device using the same
JP2004095311A (en) * 2002-08-30 2004-03-25 Ishikawajima Harima Heavy Ind Co Ltd Electron beam generator
WO2006103822A1 (en) * 2005-03-29 2006-10-05 Kyoto University X-ray generator using hemimorphic crystal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001176378A (en) * 1999-12-20 2001-06-29 Sharp Corp Cold cathode and method of manufacturing the same
JP2004087304A (en) * 2002-08-27 2004-03-18 Mitsubishi Electric Corp Cold cathode electron source and display device using the same
JP2004095311A (en) * 2002-08-30 2004-03-25 Ishikawajima Harima Heavy Ind Co Ltd Electron beam generator
WO2006103822A1 (en) * 2005-03-29 2006-10-05 Kyoto University X-ray generator using hemimorphic crystal

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010116709A1 (en) * 2009-04-07 2010-10-14 有限会社アドテックセンシングリサーチ X-ray generator and composite device using the same and x-ray generating method
JP4688978B2 (en) * 2009-04-07 2011-05-25 有限会社アドテックセンシングリサーチ X-ray generation apparatus, composite apparatus using the same, and X-ray generation method
EP2418671A4 (en) * 2009-04-07 2014-05-21 Adtech Sensing Res Inc X-ray generator and composite device using the same and x-ray generating method
US8917814B2 (en) 2009-04-07 2014-12-23 Mikio Takai X-ray generator and composite device using the same and X-ray generating method
US8755493B2 (en) 2009-08-07 2014-06-17 The Regents Of The University Of California Apparatus for producing X-rays for use in imaging
WO2012005338A3 (en) * 2010-07-09 2012-03-15 有限会社アドテックセンシングリサーチ X-ray generating device
US8976932B2 (en) 2010-07-09 2015-03-10 Bsr Co., Ltd. X-ray generating device
WO2013058342A1 (en) * 2011-10-18 2013-04-25 株式会社Ｂｓｒ Charged particle emission device and x-ray generator using the device
DE202013005768U1 (en) 2013-06-21 2013-07-22 Technische Universität Bergakademie Freiberg Device for generating X-radiation by means of pyroelectric material
US10712296B2 (en) 2016-12-23 2020-07-14 Orion Engineering Limited Handheld material analyser

Also Published As

Publication number Publication date
JPWO2008123301A1 (en) 2010-07-15
JP5019302B2 (en) 2012-09-05

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