GB1443457A - Electron guns - Google Patents
Electron gunsInfo
- Publication number
- GB1443457A GB1443457A GB3330773A GB3330773A GB1443457A GB 1443457 A GB1443457 A GB 1443457A GB 3330773 A GB3330773 A GB 3330773A GB 3330773 A GB3330773 A GB 3330773A GB 1443457 A GB1443457 A GB 1443457A
- Authority
- GB
- United Kingdom
- Prior art keywords
- window
- anodes
- cathode
- sealed
- glow discharge
- 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
- H01J33/00—Discharge tubes with provision for emergence of electrons or ions from the vessel; Lenard tubes
-
- 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
- H01J3/025—Electron guns using a discharge in a gas or a vapour as electron source
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J33/00—Discharge tubes with provision for emergence of electrons or ions from the vessel; Lenard tubes
- H01J33/02—Details
- H01J33/04—Windows
Landscapes
- Lasers (AREA)
Abstract
1443457 Electron beam apparatus GENERAL ELECTRIC CO Ltd 11 July 1974 [12 July 1973] 33307/73 Heading H1D In a glow discharge electron gun having a series of anodes 2 aligned with a cathode 1, anodes furthest from the cathode 1 are excluded from the glow discharge region by an electron-transmitting window 4 sealed across the beam path. The gun is sealed in a gas-tight metal enclosure with a beam-transmitting window in the wall. Window 4 is of titanium À0005 inch thick, and it divides the enclosure into two paths; the pressures in each part being different such that glow discharge takes place only in the space between cathode 1 and window 4, which may be filled with helium at a pressure of, e.g. 100 milli Torr, the pressure beyond the window being, e.g. 1 milli Torr. The voltages of the anodes are adjusted to give a required potential gradient, with cathode 1 at - 300 kv. and anode 2<SP>1</SP> limited to, say, - 100 kv. This may be modified by the addition of two or three further earth anodes. May be used for ionizing CO 2 in a laser. Window 4 may be alternatively located between two anodes, and is then sealed to the sides of the envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3330773A GB1443457A (en) | 1973-07-12 | 1973-07-12 | Electron guns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3330773A GB1443457A (en) | 1973-07-12 | 1973-07-12 | Electron guns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1443457A true GB1443457A (en) | 1976-07-21 |
Family
ID=10351262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3330773A Expired GB1443457A (en) | 1973-07-12 | 1973-07-12 | Electron guns |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1443457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0312653A1 (en) * | 1987-10-22 | 1989-04-26 | Koninklijke Philips Electronics N.V. | Electron image projector |
-
1973
- 1973-07-12 GB GB3330773A patent/GB1443457A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0312653A1 (en) * | 1987-10-22 | 1989-04-26 | Koninklijke Philips Electronics N.V. | Electron image projector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |