US4144453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for excitation and selective dissociation by absorption of laser light and application to isotopic enrichment
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1976-11-02
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Granted: 1979-03-13
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Expires: 1996-11-02
Abstract
Abstract In a method of excitation and selective dissociation by absorption of the monochromatic light emitted by a high-power laser, the laser light is sent at a frequency ν 1 into an isotopic mixture of gaseous molecules in which a certain number of molecules exhibit transitions between two vibrational levels corresponding to a predetermined isotope and separated by an energy interval ΔE 1 = 2hν 1 . The molecules of a predetermined isotopic species are thus excited preferentially until subsequent dissociation into a number of constituents.
Inventors
- 👤 Paul Rigny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A method of excitation and of selective dissociation by absorption of the monochromatic light emitted by at least one high-power laser, wherein the laser light is sent at a frequency ν 1 into an isotopic mixture of gas molecules in which a certain number of said molecules exhibit transitions between two vibrational levels corresponding to a predetermined isotope and separated by an energy interval ΔE 1 = 2hν 1 , the molecules of a predetermined isotopic species are thus preferentially excited until subsequent dissociation into a number of constituents, and a gas is added to the mixture which added gas reacts with the constituents derived from the dissociated molecules of a predetermined isotopic species.
Claim 2
Independent Claim
114 words
A method of excitation and of selective dissociation by absorption of the monochromatic light emitted by at least one high-power laser, wherein the laser light is sent at a frequency ν 1 into an isotopic mixture of gas molecules in which a certain number of said molecules exhibit transitions between two vibrational levels corresponding to a predetermined isotope and separated by an energy interval ΔE 1 = 2hν 1 , the molecules of a predetermined isotopic species are thus preferentially excited until subsequent dissociation into a number of constituents, and a gas is added to the mixture which added gas reacts with the constituents derived from the dissociated molecules of a predetermined isotopic species.
Claim 3
Dependent Claim
37 words
An application of the method according to claim 1 to the enrichment of uranium, wherein the isotopic mixture comprises molecules A containing uranium and molecules B which react with the products of dissociation of the molecules A.
Claim 4
Dependent Claim
19 words
An application according to claim 2, wherein the molecules A are molecules of an isotopic mixture of uranium hexafluoride.
Claim 5
Dependent Claim
13 words
An application according to claim 3, wherein the molecules B are hydrogen molecules.
Claim 6
Independent Claim
43 words
A method for the enrichment of uranium by at least one high power laser, wherein the laser light is sent into an isotopic mixture comprising molecules A containing uranium and molecules B which react with the products of dissociation of the molecules A.
Claim 7
Independent Claim
43 words
A method for the enrichment of uranium by at least one high power laser, wherein the laser light is sent into an isotopic mixture comprising molecules A containing uranium and molecules B which react with the products of dissociation of the molecules A.
Claim 8
Dependent Claim
18 words
The method according to claim 5, wherein molecules A are molecules of an isotopic mixture of uranium hexafluoride.
Claim 9
Dependent Claim
13 words
The method according to claim 6, wherein the molecules B are hydrogen molecules.
References Cited (Backward Citations)
GB1284620A
Cited
US3772519A
Cited
GB1440139A
Cited
US4009391A
Cited
US4023038A
Cited
US3987302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |