GB1301478A - - Google Patents
Info
- Publication number
- GB1301478A GB1301478A GB1301478DA GB1301478A GB 1301478 A GB1301478 A GB 1301478A GB 1301478D A GB1301478D A GB 1301478DA GB 1301478 A GB1301478 A GB 1301478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- welding
- annular
- anode
- tubes
- 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
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
- H01J37/06—Electron sources; Electron guns
- H01J37/077—Electron guns using discharge in gases or vapours as electron sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
- H01J37/06—Electron sources; Electron guns
- H01J37/073—Electron guns using field emission, photo emission, or secondary emission electron sources
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4724669 | 1969-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1301478A true GB1301478A (no) | 1972-12-29 |
Family
ID=10444290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1301478D Expired GB1301478A (no) | 1969-09-25 | 1969-09-25 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1301478A (no) |
-
1969
- 1969-09-25 GB GB1301478D patent/GB1301478A/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |