Patent US3676672A successfully refreshed from Google Patents.
US3676672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large diameter ion beam apparatus with an apertured plate electrode to maintain uniform flux density across the beam
Assignee: Individual
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Filing: 1969-02-03
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Granted: 1972-07-11
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Expires: 1989-02-03
Abstract
Abstract The apparatus generates a high energy beam of large size, on the order of 12 centimeters or more in diameter, the beam being passed through a mass separator which extracts unwanted charged particles, leaving a pure single specie beam. The resultant beam is space charge neutralized to prevent coulombic spreading and maintains a substantially constant flux density over the full beam cross section. Using appropriate gaseous material for ionization, the apparatus provides a particularly effective simulation of solar plasma wind, as one example of its utility.
Inventors
- 👤 Benjamin B Meckel
- 👤 Robert L Lebduska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/34; H01J49/36; H01J27/00; H01J27/02; H01J27/16; H01J49/02; H01J49/10; H01J49/105; H01J49/44; H01J49/443; H05; H05H; H05H1/00; H05H1/24; H05H1/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
Ion beam apparatus, comprising: an ion generating source having an output providing A plurality of closely spaced ion beams effectively merging into a single beam on the order of 12 centimeters diameter and of substantially constant flux density across its cross section; and a mass separator axially connected to said output, said mass separator having means for preferential acceleration of a single specie ion and retardation of other ions, and said separator having an open output end substantially unobstructed and substantially as large as the effective beam cross section to emit from said mass separator a single ion specie beam of like size for use in a utilization device to be connected to said outlet.
Claim 2
Dependent Claim
115 words
Ion beam apparatus, comprising: an ion generating source having an output providing A plurality of closely spaced ion beams effectively merging into a single beam on the order of 12 centimeters diameter and of substantially constant flux density across its cross section; and a mass separator axially connected to said output, said mass separator having means for preferential acceleration of a single specie ion and retardation of other ions, and said separator having an open output end substantially unobstructed and substantially as large as the effective beam cross section to emit from said mass separator a single ion specie beam of like size for use in a utilization device to be connected to said outlet.
Claim 3
Dependent Claim
62 words
The structure of claim 1, wherein said ion source includes a chamber having an inlet, a source of gas to be ionized connected to said inlet, and a plate element in one end of said chamber transversely disposed relative to said beams and having a plurality of closely spaced apertures through which ions from said source are expelled into said mass separator.
Claim 4
Dependent Claim
48 words
The structure of claim 2, and including an anode in said chamber, a beam energizing power supply coupled to said anode, and an ion extraction power supply coupled to said plate element with a potential less than that on said anode, whereby ions are accelerated through said apertures.
Claim 5
Dependent Claim
20 words
The structure of claim 3, and including gas ionizing radio frequency field generating means at least partially surrounding said chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |