US4242584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for separating isotopes which are in the form of molecules
Assignee: Karlsruher Institut für Technologie
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Filing: 1976-06-22
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Granted: 1980-12-30
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Expires: 1996-06-22
Abstract
Abstract A method is provided for separating isotopes of an element where the isots are present in the form of molecules and where the isotopes participate in the vibrations of the molecules and are excited by means of radiation and then separated. Isotopes or elements with a defined nucleon-number are selected in which a shift of the band edges in their absorption spectra is present due to the isotopy effect, and radiation that is used lies within that frequency interval in which the absorption coefficient of one isotope of an isotope mixture or several isotopes of an isotope mixture is greater than that of the other isotope or the remaining portion of the isotopes, respectively.
Inventors
- 👤 Gunther Krieg
- 👤 Wolfgang Obert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:24
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
In a method for separating isotopes of an element where the isotopes are in the form of molecules and where the isotopes participate in the vibrations of the molecules, which method includes exciting such molecules by means of radiation and then separating the molecules of at least one isotope from the molecules of at least one other isotope, the improvement comprising selecting isotopes in which a shift of the band edges in their absorption spectra is present due to the isotopy effect, and exciting the isotopes with radiation from a source whose spectrum extends across the region between the band edges of the one isotope and the other isotope, said exciting being a simultaneous excitation of a plurality of absorption lines.
Claim 2
Dependent Claim
121 words
In a method for separating isotopes of an element where the isotopes are in the form of molecules and where the isotopes participate in the vibrations of the molecules, which method includes exciting such molecules by means of radiation and then separating the molecules of at least one isotope from the molecules of at least one other isotope, the improvement comprising selecting isotopes in which a shift of the band edges in their absorption spectra is present due to the isotopy effect, and exciting the isotopes with radiation from a source whose spectrum extends across the region between the band edges of the one isotope and the other isotope, said exciting being a simultaneous excitation of a plurality of absorption lines.
Claim 3
Dependent Claim
21 words
The method as defined in claim 1 wherein a light source is employed whose radiation frequencies correspond to the frequency range.
Claim 4
Dependent Claim
20 words
The method as defined in claim 1 wherein a laser is employed whose radiation frequencies correspond to the frequency range.
Claim 5
Dependent Claim
16 words
The method as defined in claim 1 wherein a temperature is used which optimizes the method.
Claim 6
Dependent Claim
18 words
The method as defined in claim 1 including determining the concentration or concentrations ratio, respectively, of the isotopes.
Claim 7
Dependent Claim
25 words
Method as defined in claim 1 wherein the temperature is selected so that the maximum occupation density is in the area of the band edges.
References Cited (Backward Citations)
US3937956A
Cited
US4107536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |