FR2146567A5 - Electron emission source - using cold cathode two electrode assembly and pulsed power supply - Google Patents
Electron emission source - using cold cathode two electrode assembly and pulsed power supplyInfo
- Publication number
- FR2146567A5 FR2146567A5 FR7126400A FR7126400A FR2146567A5 FR 2146567 A5 FR2146567 A5 FR 2146567A5 FR 7126400 A FR7126400 A FR 7126400A FR 7126400 A FR7126400 A FR 7126400A FR 2146567 A5 FR2146567 A5 FR 2146567A5
- Authority
- FR
- France
- Prior art keywords
- cathode
- cold cathode
- power supply
- electrode assembly
- electron emission
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/021—Electron guns using a field emission, photo emission, or secondary emission electron source
Landscapes
- Electron Sources, Ion Sources (AREA)
Abstract
The high voltage pulses applied across the anode and cathode produce an electric field sufficient to strip the natural electron-ion plasma from the cold cathode surface producing a high current. This would be sufficient to destroy the cathode, and to increase the cathode life this plasma is continuously replaced, either by a discrete gas feed through the interior of the cathode body to a porous surface section opposite the anode, or by gas liberated from a (clathrate) body behind that front section. The gas used has a low atomic number and low ionising voltage e.g. is one of the following: H2, He, N2 or alkaline earth metal vapour.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7126400A FR2146567A5 (en) | 1971-07-19 | 1971-07-19 | Electron emission source - using cold cathode two electrode assembly and pulsed power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7126400A FR2146567A5 (en) | 1971-07-19 | 1971-07-19 | Electron emission source - using cold cathode two electrode assembly and pulsed power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2146567A5 true FR2146567A5 (en) | 1973-03-02 |
Family
ID=9080569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7126400A Expired FR2146567A5 (en) | 1971-07-19 | 1971-07-19 | Electron emission source - using cold cathode two electrode assembly and pulsed power supply |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2146567A5 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638217A (en) * | 1982-03-20 | 1987-01-20 | Nihon Denshizairyo Kabushiki Kaisha | Fused metal ion source with sintered metal head |
FR2604823A1 (en) * | 1986-10-02 | 1988-04-08 | Etude Surfaces Lab | ELECTRON EMITTING DEVICE AND ITS APPLICATION IN PARTICULAR TO THE PRODUCTION OF TELEVISION DISPLAY SCREENS |
-
1971
- 1971-07-19 FR FR7126400A patent/FR2146567A5/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638217A (en) * | 1982-03-20 | 1987-01-20 | Nihon Denshizairyo Kabushiki Kaisha | Fused metal ion source with sintered metal head |
FR2604823A1 (en) * | 1986-10-02 | 1988-04-08 | Etude Surfaces Lab | ELECTRON EMITTING DEVICE AND ITS APPLICATION IN PARTICULAR TO THE PRODUCTION OF TELEVISION DISPLAY SCREENS |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |