JPS5238873A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS5238873A
JPS5238873A JP50114299A JP11429975A JPS5238873A JP S5238873 A JPS5238873 A JP S5238873A JP 50114299 A JP50114299 A JP 50114299A JP 11429975 A JP11429975 A JP 11429975A JP S5238873 A JPS5238873 A JP S5238873A
Authority
JP
Japan
Prior art keywords
electron gun
contact
thermoelectron emitter
stableh
hexaboride
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
JP50114299A
Other languages
Japanese (ja)
Inventor
Koichi Tatsuno
Yukio Komine
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP50114299A priority Critical patent/JPS5238873A/en
Publication of JPS5238873A publication Critical patent/JPS5238873A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE:To enable stableh eating for a long time in contact with the thermoelectron emitter such as hexaboride of chemical activity and to suppress the changes in the electron emission characteristics due to the sublimation of thermoelectron emitter and the contact condition change of the object to be heated with this.
JP50114299A 1975-09-23 1975-09-23 Electron gun Pending JPS5238873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50114299A JPS5238873A (en) 1975-09-23 1975-09-23 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50114299A JPS5238873A (en) 1975-09-23 1975-09-23 Electron gun

Publications (1)

Publication Number Publication Date
JPS5238873A true JPS5238873A (en) 1977-03-25

Family

ID=14634380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50114299A Pending JPS5238873A (en) 1975-09-23 1975-09-23 Electron gun

Country Status (1)

Country Link
JP (1) JPS5238873A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5976247A (en) * 1995-06-14 1999-11-02 Memc Electronic Materials, Inc. Surface-treated crucibles for improved zero dislocation performance
US5980629A (en) * 1995-06-14 1999-11-09 Memc Electronic Materials, Inc. Methods for improving zero dislocation yield of single crystals
US6479108B2 (en) 2000-11-15 2002-11-12 G.T. Equipment Technologies, Inc. Protective layer for quartz crucibles used for silicon crystallization
JP2019153563A (en) * 2018-03-06 2019-09-12 株式会社Ｐａｒａｍ Electron gun
WO2019172433A1 (en) * 2018-03-09 2019-09-12 Atonarp Inc. Device including an ionizer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5976247A (en) * 1995-06-14 1999-11-02 Memc Electronic Materials, Inc. Surface-treated crucibles for improved zero dislocation performance
US5980629A (en) * 1995-06-14 1999-11-09 Memc Electronic Materials, Inc. Methods for improving zero dislocation yield of single crystals
US6479108B2 (en) 2000-11-15 2002-11-12 G.T. Equipment Technologies, Inc. Protective layer for quartz crucibles used for silicon crystallization
JP2019153563A (en) * 2018-03-06 2019-09-12 株式会社Ｐａｒａｍ Electron gun
WO2019172433A1 (en) * 2018-03-09 2019-09-12 Atonarp Inc. Device including an ionizer

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