JPS6476642A - Hollow cathode - Google Patents
Hollow cathodeInfo
- Publication number
- JPS6476642A JPS6476642A JP62230619A JP23061987A JPS6476642A JP S6476642 A JPS6476642 A JP S6476642A JP 62230619 A JP62230619 A JP 62230619A JP 23061987 A JP23061987 A JP 23061987A JP S6476642 A JPS6476642 A JP S6476642A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- arc
- discharge
- temperature
- ions
- 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
Landscapes
- Electron Sources, Ion Sources (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE:To improve the reliability by fitting an arc cathode electrically floatingly in relation to a cathode pipe so that the negative potential can be applied. CONSTITUTION:When the discharge-forming gas 9 is fed through a cathode pipe 3 at the rate of 10cc or more per minute, for example, and the high voltage of 1KV or more, for example, is applied across a cathode disk 4 and a keeper electrode 1, a glow discharge is generated across the cathode disk 4 and the keeper electrode 1. If the negative voltage of about 10-100V is applied to an arc cathode 6 at this time, ions generated during the glow discharge hit the surface of the arc cathode 6 to heat it. When the temperature of the arc cathode 6 rises, thermo-electrons are emitted from the arc cathode 6, these electrons ionize the discharge forming gas molecules to generate ions, these ions again hit the arc cathode 6 to raise the temperature further. The temperature of the cathode 6 continues to rise, the thermo-electron current continues to increase and is balanced at the preset current value of an arc driving power source, and the discharge is continued even after a negative electrode 11 connected to the cathode 6 is cut off.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230619A JPS6476642A (en) | 1987-09-14 | 1987-09-14 | Hollow cathode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230619A JPS6476642A (en) | 1987-09-14 | 1987-09-14 | Hollow cathode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6476642A true JPS6476642A (en) | 1989-03-22 |
Family
ID=16910608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62230619A Pending JPS6476642A (en) | 1987-09-14 | 1987-09-14 | Hollow cathode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6476642A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200097262A (en) * | 2017-12-12 | 2020-08-18 | 라파엘 어드벤스드 디펜스 시스템즈 리미티드. | Apparatus and method for operating a heaterless hollow cathode, and electric space propulsion system using such cathode |
-
1987
- 1987-09-14 JP JP62230619A patent/JPS6476642A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200097262A (en) * | 2017-12-12 | 2020-08-18 | 라파엘 어드벤스드 디펜스 시스템즈 리미티드. | Apparatus and method for operating a heaterless hollow cathode, and electric space propulsion system using such cathode |
JP2021513719A (en) * | 2017-12-12 | 2021-05-27 | ラファエル アドバンスド ディフェンス システムズ エルティーディー | Devices and methods for operating heaterless hollow cathodes and electrical space propulsion systems that use the cathodes. |
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