JPS57107540A - Hollow-cathode discharge device - Google Patents
Hollow-cathode discharge deviceInfo
- Publication number
- JPS57107540A JPS57107540A JP55184223A JP18422380A JPS57107540A JP S57107540 A JPS57107540 A JP S57107540A JP 55184223 A JP55184223 A JP 55184223A JP 18422380 A JP18422380 A JP 18422380A JP S57107540 A JPS57107540 A JP S57107540A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- tubular
- hollow
- hollow cathode
- orifice section
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J27/00—Ion beam tubes
- H01J27/02—Ion sources; Ion guns
- H01J27/022—Details
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Electron Sources, Ion Sources (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE:To increase the discharge current and to lengthen the service life of a cathode, by forming the orifice section at the tip of a hollow cathode with a porous board. CONSTITUTION:A hollow cathode 2 one opening of which is led out to the outside of a discharge chamber and a tubular cathode 3 facing with the other opening are provided in the discharge chamber 1. The hollow cathode 2 is formed with a tubular member 4, a tubular thermion emitting member 5 fixed to the inner circumferential face at the opening side in said tubular discharge chamber 1 and an orifice section 6 fixed to the open end in said chamber 1. The orifice section 6 is formed with a porous board having a plurality of through-holes. While a heater 7 wound spirally and coaxially with the cathode 2 is provided at the outer circumference at the other end of the hollow cathode 2 and a thermal shield board 9 is provided on the outer circumference of the cathode 2 while surrounding the heater 7. Consequently the discharge current can be increased while the service life of the cathode can be lengthened.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55184223A JPS57107540A (en) | 1980-12-25 | 1980-12-25 | Hollow-cathode discharge device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55184223A JPS57107540A (en) | 1980-12-25 | 1980-12-25 | Hollow-cathode discharge device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57107540A true JPS57107540A (en) | 1982-07-05 |
Family
ID=16149514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55184223A Pending JPS57107540A (en) | 1980-12-25 | 1980-12-25 | Hollow-cathode discharge device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57107540A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162648A1 (en) * | 1999-02-23 | 2001-12-12 | Hamamatsu Photonics K.K. | Hollow-cathode lamp |
-
1980
- 1980-12-25 JP JP55184223A patent/JPS57107540A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162648A1 (en) * | 1999-02-23 | 2001-12-12 | Hamamatsu Photonics K.K. | Hollow-cathode lamp |
EP1162648A4 (en) * | 1999-02-23 | 2002-05-02 | Hamamatsu Photonics Kk | Hollow-cathode lamp |
US6548958B2 (en) | 1999-02-23 | 2003-04-15 | Hamamatsu Photonics K.K. | Hollow cathode lamp |
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