US3833829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion source
Assignee: US Philips Corp
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Filing: 1972-12-14
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Granted: 1974-09-03
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Expires: 1992-12-14
Abstract
Abstract An ion source having an anode between two cathodes and means for producing an axial magnetic field. Detremental heating of the cathode present opposite to the ion exit aperture by particles which are accelerated in the reverse direction and have a charge which is opposite to that of the extracted ion beam is prevented. For that purpose said cathode and the means for producing an axial magnetic field have an axial aperture. A collector electrode is present for capturing the relevant particles. The ion source is particularly suitable for a sealed neutron generator.
Inventors
- 👤 O Reifenschweiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:31
CPC Classifications
H; H05; H05H; H05H3/00; H05H3/06; H01; H01J; H01J27/00; H01J27/02; H01J27/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
An ion source comprising a first cathode, a second cathode having an ion exit aperture, an anode between the two cathodes, and means for producing an axial magnetic field, characterized in that the first cathode and the means for producing an axial magnetic field comprise an axial aperture and that the ion source furthermore comprises a collector electrode on the side of the first cathode remote from the anode.
Claim 2
Dependent Claim
69 words
An ion source comprising a first cathode, a second cathode having an ion exit aperture, an anode between the two cathodes, and means for producing an axial magnetic field, characterized in that the first cathode and the means for producing an axial magnetic field comprise an axial aperture and that the ion source furthermore comprises a collector electrode on the side of the first cathode remote from the anode.
Claim 3
Dependent Claim
18 words
An ion source as claimed in claim 1, characterized in that the collector electrode comprises a funnel-like cavity.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |