Patent US3611029A successfully refreshed from Google Patents.
US3611029A
Expired / Lapsed
US
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Source for highly stripped ions
Assignee: United States Atomic Energy Commission
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Filing: 1969-09-09
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Granted: 1971-10-05
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Expires: 1989-09-09
Abstract
Abstract Apparatus for producing highly stripped ions by sufficient exposure of these ions to a cloud of energetic electrons, for producing an electrostatic negative potential well capable of confining these ions during the stripping process, for creating magnetic and electrostatic forces capable of confining the energetic electrons forming the electron cloud with only a low rate of electron loss and a slow dissipation of electron energy, and contemplating means for producing a transverse electric field that removes electrons undesirably trapped in electrostatic positive potential maxima.
Inventors
- 👤 Thomas H Stix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
76 words
In an ion source of the type having a gas source, means for producing a magnetic field and a cloud of energetic electrons in said field for producing ions from a gas from said source, the improvement comprising means forming a double-humped electrostatic potential profile immersed in said field for confining said electron cloud and said ions for relatively long periods of time for producing highly stripped heavy ions from a gas from said gas source.
Claim 2
Dependent Claim
76 words
In an ion source of the type having a gas source, means for producing a magnetic field and a cloud of energetic electrons in said field for producing ions from a gas from said source, the improvement comprising means forming a double-humped electrostatic potential profile immersed in said field for confining said electron cloud and said ions for relatively long periods of time for producing highly stripped heavy ions from a gas from said gas source.
Claim 3
Dependent Claim
48 words
The invention of claim 1 having means for producing a transverse electric field for removing electrons undesirably trapped in positive potential maxima of said double-humped electrostatic potential profile, thereby to prevent said electrons from accumulating therein so as to neutralize the ion-confining operation of said positive potential maxima.
Claim 4
Dependent Claim
32 words
The invention of claim 1 in which the electrodes are so disposed and biased so as to cause the individual injected energetic electrons advantageously to make numerous transits through the ion cloud.
Claim 5
Dependent Claim
28 words
THe invention of claim 1 in which said means forming said double-humped electrostatic potential profile has a slab geometry for producing a slab-shaped electron cloud in said profile.
Claim 6
Dependent Claim
29 words
The invention of claim 1 in which each hump of said double-humped electrostatic profile substantially corresponds in potential strength with the other corresponding hump of said double-humped electrostatic profile.
References Cited (Backward Citations)
US3441756A
Cited
US3421035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |