Process for separating an isotope from a mixture of different isotopes by using a single laser beam
Patent 4584072 Issued on April 22, 1986. Estimated Expiration Date: 
April 22, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 22, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for separating isotopes Laser isotope separation by multiple photon absorption Isotope separation Electronically induced multiphoton absorption Method of separating isotopes from a gas mixture Method for isotope enrichment by photoinduced chemiionization Patent #: 4514363 InventorsAssigneeApplicationNo. 06/473131 filed on 03/07/1983US Classes:204/157.22, Using laser250/423P, Photoionization type423/3Actinide series metal (At. No. 89+)ExaminersPrimary: Miller, Edward A.Attorney, Agent or FirmInternational ClassesB01D 59/00 (20060101)B01D 59/34 (20060101) Foreign Application Priority Data1982-03-10 JPAbstractA process is, herein, disclosed for separating a particular isotope from a mixture of different isotopes by selective excitation and ionization of the particular isotope with a single laser beam, said process comprising heating the mixture, converting the resulting atomic vapor to a highly directional atomic beam by suitable means, causing said atomic beam to travel through a vacuum, crossing the atomic beam with a high-intensity laser beam having a specific wavelength, selectively exciting the particular isotope with a first photon having that specific wavelength while the other isotopes remaining in the ground state, allowing the excited isotope to absorb a second photon to be excited to a virtual energy level, causing the so excited isotope to absorb a third photon to ionize said isotope, and recovering the ionized isotope by use of an electric or electromagnetic field.Other References
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