Patent US4710295A successfully refreshed from Google Patents.
US4297191A
Expired / Lapsed
US
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Isotopic separation
Assignee: Westinghouse Electric Co LLC
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Filing: 1979-08-30
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Granted: 1981-10-27
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Expires: 1999-08-30
Abstract
Abstract Method and apparatus for separating isotopes in an isotopic mixture. Photo-excitation of selected isotopic species is utilized in conjunction with various processes including reaction of the excited species with positive ions of predetermined ionization energy, other excited species or free electrons. The products of the reactions include forms of the selected isotopic species which are different than their form prior to excitation, including different mass, charge or chemical make-up. The selected species is then separated from the balance of the reaction products. Ions and electrons are produced by an electrical discharge, and separation is achieved through radial ambipolar diffusion, electrostatic or magnetohydrodynamic techniques.
Inventors
- 👤 Cheng-Lin Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:51
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
Apparatus for separating isotopes in an isotopic mixture having a first species including a first isotope of a particular element and a second species including a second isotope of said element, said apparatus comprising: structure defining a flow passage, said passage serially including means for inletting a flowing gas, means for passing said inletted flowing gas through a curved centrifuge section having an inner radius of curvature and an outer radius of curvature, and means for segmenting said passage into a plurality of outlets including an inner segment disposed toward said inner radius and an outer segment disposed toward said outer radius; means for creating a magnetic field within said centrifuge section; means for creating a discharge zone between said gas inlet means and said centrifuge section; means for injecting said mixture in a gaseous phase into said flow passage downstream of said discharge means; and means for irradiating said injected mixture between said injecting means and at least a portion of said centrifuge section so as to selectively excite said first species.
Claim 2
Dependent Claim
173 words
Apparatus for separating isotopes in an isotopic mixture having a first species including a first isotope of a particular element and a second species including a second isotope of said element, said apparatus comprising: structure defining a flow passage, said passage serially including means for inletting a flowing gas, means for passing said inletted flowing gas through a curved centrifuge section having an inner radius of curvature and an outer radius of curvature, and means for segmenting said passage into a plurality of outlets including an inner segment disposed toward said inner radius and an outer segment disposed toward said outer radius; means for creating a magnetic field within said centrifuge section; means for creating a discharge zone between said gas inlet means and said centrifuge section; means for injecting said mixture in a gaseous phase into said flow passage downstream of said discharge means; and means for irradiating said injected mixture between said injecting means and at least a portion of said centrifuge section so as to selectively excite said first species.
Claim 3
Dependent Claim
185 words
Apparatus for separating isotopes in an isotopic mixture having a first species including a first isotope of a particular element and a second species including a second isotope of said element, said apparatus comprising: means for creating an electrical discharge zone; means for flowing a selected gas through said zone; means for injecting said mixture into said flowing gas a preselected distance downstream of said discharge zone such that said mixture flows in a direction substantially similar to the flow of said gas; means for irradiating said mixture subsequent to said injection so as to selectively excite said first species and cause a predetermined release of reaction products, some of said products being of differing mass and including a species of said first isotope in a form different than its initial form prior to said irradiation; curved means for deflecting said products of differing mass along differing flow paths; means for creating a magnetic field in the region of said curved deflecting means; and means for collecting said deflected products including a segment for collecting said species of said first isotope in a different form.
Claim 4
Dependent Claim
185 words
Apparatus for separating isotopes in an isotopic mixture having a first species including a first isotope of a particular element and a second species including a second isotope of said element, said apparatus comprising: means for creating an electrical discharge zone; means for flowing a selected gas through said zone; means for injecting said mixture into said flowing gas a preselected distance downstream of said discharge zone such that said mixture flows in a direction substantially similar to the flow of said gas; means for irradiating said mixture subsequent to said injection so as to selectively excite said first species and cause a predetermined release of reaction products, some of said products being of differing mass and including a species of said first isotope in a form different than its initial form prior to said irradiation; curved means for deflecting said products of differing mass along differing flow paths; means for creating a magnetic field in the region of said curved deflecting means; and means for collecting said deflected products including a segment for collecting said species of said first isotope in a different form.
References Cited (Backward Citations)
US3559373A
Cited
US3877892A
Cited
US3989483A
Cited
US4107537A
Cited
US4024217A
Cited
US4090856A
Cited
US4176025A
Cited
US4070580A
Cited
US4110182A
Cited
US4101396A
Cited
US4158775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |