JPS5257772A - Field radiation type electronic gun - Google Patents

Field radiation type electronic gun

Info

Publication number
JPS5257772A
JPS5257772A JP13289175A JP13289175A JPS5257772A JP S5257772 A JPS5257772 A JP S5257772A JP 13289175 A JP13289175 A JP 13289175A JP 13289175 A JP13289175 A JP 13289175A JP S5257772 A JPS5257772 A JP S5257772A
Authority
JP
Japan
Prior art keywords
field radiation
electronic gun
type electronic
radiation type
heating
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
JP13289175A
Other languages
Japanese (ja)
Inventor
Akimitsu Okura
Naotake Saito
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13289175A priority Critical patent/JPS5257772A/en
Publication of JPS5257772A publication Critical patent/JPS5257772A/en
Pending legal-status Critical Current

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  • Electron Sources, Ion Sources (AREA)

Abstract

PURPOSE: Both heating and gas exhaustion can be sufficiently secured from outside vacuum for the whole electronic gun room at exhaustion process. And an easy heating for anode in particular becomes possible. In this way, a stabilized electric field radiation current can be obtained through simple operation and with a compact equipment.
COPYRIGHT: (C)1977,JPO&Japio
JP13289175A 1975-11-07 1975-11-07 Field radiation type electronic gun Pending JPS5257772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13289175A JPS5257772A (en) 1975-11-07 1975-11-07 Field radiation type electronic gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13289175A JPS5257772A (en) 1975-11-07 1975-11-07 Field radiation type electronic gun

Publications (1)

Publication Number Publication Date
JPS5257772A true JPS5257772A (en) 1977-05-12

Family

ID=15091958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13289175A Pending JPS5257772A (en) 1975-11-07 1975-11-07 Field radiation type electronic gun

Country Status (1)

Country Link
JP (1) JPS5257772A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225521A (en) * 2013-06-17 2013-10-31 Hitachi High-Technologies Corp Electron gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225521A (en) * 2013-06-17 2013-10-31 Hitachi High-Technologies Corp Electron gun

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