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6137073 Enrichment method for radioactive isotopes  
In the method of this invention, a radioactive isotope, for example, U 238 , is placed within a region. High-energy electrons or high-energy photons in the form of X-rays, gamma rays, or laser...
5951830 Process for purification of hydrochlorofluoroethanes  
To remove the olefinic impurities from a hydrochlorofluoroethane of formula: CF 3 --CHClX (X=H, F, or Cl), it is subjected to a photochlorination stage.
5948214 Isotope separation  
A method of isotope separation includes vaporisation and atomising in an evacuated chamber a supply of the element whose isotopes are to be separated to form a stream of atoms of the element in the...
5945649 Atomic vapor laser isotope separation of lead-210 isotope  
An isotopically selective laser process and apparatus for removal of Pb-210 from natural lead that involves a one-photon near-resonant, two-photon resonant excitation of one or more Rydberg levels,...
5468355 Method for producing radioisotopes  
A target is bombarded with high energy particles to generate a radioisotope, and the radioisotope is preferably extracted by one of the following: combusting the target in oxygen, stopping the...
5464512 Method of uranium isotope enrichment by utilizing a photochemically selective effect  
A method of uranium isotope enrichment by utilizing a photochemically selective effect is provided. The method comprises placing a powder of a uranyl compound of carboxylate having at least one...
5419820 Process for producing enriched uranium having a .sup.235 U content of at least 4 wt. % via combination of a gaseous diffusion process and an atomic vapor laser isotope separation process to eliminate uranium hexafluoride tails storage  
An uranium enrichment process capable of producing an enriched uranium, having a 235 U content greater than about 4 wt. %, is disclosed which will consume less energy and produce metallic uranium...
5378436 Method and apparatus for producing hydrogen peroxide  
A method for producing hydrogen peroxide by electrical discharge in a material gas in which oxygen concentration is not less than 0.5% and less than 13% is disclosed in the first aspect. In the...
5316635 Zirconium isotope separation using tuned laser beams  
A method for selectively photoionizing odd mass Zr atoms. Atomic vapours are subjected to three resonant and are non resonant laser pulses to raise the energy of Zr atoms from the J=2 ground state,...
5205913 Process of .sup.196 Hg enrichment  
A simple rate equation model shows that by increasing the length of the photochemical reactor and/or by increasing the photon intensity in said reactor, the feedstock utilization of 196 Hg will...
5202005 Gadolinium photoionization process  
A method is provided for selective photoionization of the odd-numbered atomic mass gadolinium isotopes 155 and 157. The selective photoionization is accomplished by circular or linear parallel...
5131991 Automated product recovery in a HG-196 photochemical isotope separation process  
A method of removing deposited product from a photochemical reactor used in the enrichment of 196 Hg has been developed and shown to be effective for rapid re-cycling of the reactor system....
5130001 Uranium isotope separation by continuous anion exchange chromatography  
A simple, low temperature process for separating uranium isotopes and producing substantially pure uranium isotope fractions from a crude uranium isotope-containing aqueous feed stock is provided....
5116470 Preparation of high specific activity technetium-96  
The present invention relates to a method of producing Tc-96 from the proton irradiation of a rhodium target and a technique for isolating under remote hot cell conditions the Tc-96 from the proton...
5110430 High mass isotope separation arrangement  
An isotope separation arrangement for separating a preselected isotope from a mixture of chemically identical but isotopically different molecules by either photon-induced pure rovibrational or...
5100803 On-line method of determining utilization factor in Hg-196 photochemical separation process  
The present invention is directed to a method for determining the utilization factor [U] in a photochemical mercury enrichment process ( 196 Hg) by measuring relative 196 Hg densities using...
5093086 Packed bed reactor for photochemical .sup.196 Hg isotope separation  
Straight tubes and randomly oriented pieces of tubing having been employed in a photochemical mercury enrichment reactor and have been found to improve the enrichment factor (E) and utilization (U)...
5061353 High feedstock utilization photochemical process for .sup.196 Hg enrichment  
A photochemical process for 196 Hg enrichment is provided. The process of the invention includes entraining mercury including 196 Hg isotope in a carrier medium comprising argon and HCl; and...
5056359 Method and apparatus to measure vapor pressure in a flow system  
The present invention is directed to a method for determining, by a condensation method, the vapor pressure of a material with a known vapor pressure versus temperature characteristic, in a flow...
5031883 Apparatus for mercury refinement  
The effluent from mercury collected during the photochemical separation of the 196 Hg isotope is often contaminated with particulate mercurous chloride, Hg 2 Cl 2 . The use of mechanical...
5024739 Novel hybrid isotope separation scheme and apparatus  
A method of yielding selectively a desired enrichment in a specific isotope including the steps of inputting into a spinning chamber a gas from which the specific isotope is to be isolated,...
5013366 Cleaning process using phase shifting of dense phase gases  
A process for removing two or more contaminants from a substrate in a single process. The substrate to be cleaned is contacted with a dense phase gas at or above the critical pressure thereof. The...
5012106 Axi-symmetrical flow reactor for .sup.196 Hg photochemical enrichment  
The present invention is directed to an improved photochemical reactor useful for the isotopic enrichment of a predetermined isotope of mercury, especially, 196 Hg. Specifically, two...
4981562 Electrolytic recovery of mercury enriched in isotopic abundance  
The present invention is directed to a method of electrolytically extracting liquid mercury from HgO or Hg 2 Cl 2 . Additionally there are disclosed two related techniques associated with the...
4981565 Method and apparatus for controlling the flow rate of mercury in a flow system  
A method for increasing the mercury flow rate to a photochemical mercury enrichment utilizing an entrainment system comprises the steps of passing a carrier gas over a pool of mercury maintained at...
4946567 Apparatus for the distribution of laser beams used during a selective reaction in a process for isotope separation by lasers  
Apparatus for the distribution of laser beams used during a selective reaction in a process for isotope separation by lasers. The system comprises in an enclosure (10), a material in the form of a...
4880512 Pulsed light selective photolysis process for treatment of biological media and products made thereby  
A novel irradiation process and products made thereby. The process treats biological media such as blood fractions, genetically engineered protein products and vaccine preparations. The process...
4824537 Working substances used in laser isotope separation and method of laser isotope separation  
Silicon isotopes are effectively separated by irradiating a polysilane compound or a fluoromosilane compound according to this invention with infrared laser rays. The polysilane compound is defined...
4801365 Method for enriching a middle isotope using vibration-vibration pumping  
Method for producing isotopically enriched material by vibration-vibration excitation of gaseous molecules wherein a middle mass isotope of an isotopic mixture including lighter and heavier mass...
4793907 Method for isotope enrichment of mercury-196 by selective photoionization  
A method is provided for selectively photoionizing 196 Hg atoms in a vapor utilizing a three or four-step photoionization process.
4786478 Method and apparatus for isotope separation  
Method and apparatus for isotope separation using the combination of selective pre-excitation by light radiation with further collisional processing in a DC, rf or microwave gas discharge field to...
4775453 Separation method of boron isotopes  
Boron isotopes are separated by a method comprising preparing a gaseous mixture from a gas containing an oxidizing gas as its main component and gaseous boron tribromide, and irradiating the...
4774026 Process and apparatus for oxidizing or reducing dissolved substance  
A dissolved substance contained in a solution is oxidized or reduced by adding a particulate semiconductor photocatalyst and a water-soluble electron acceptor or donor for the particulate...
4767513 Zirconium isotope separation process  
The zirconium 91 isotope is separated from zirconium by a photo-assisted extraction process wherein a first solution is formed of a first solvent, scavenger and zirconium compound, which compound...
4734177 Laser isotope separation  
A process and apparatus for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in...
4689128 Method of separating isotopes  
A method is, herein, disclosed for separating a specific isotope from a mixture of isotopes by first irradiating the isotope mixture with a highly monochromatic laser light that resonates only with...
4655890 Laser isotope separation by multiple photon absorption  
Multiple photon absorption from an intense beam of infrared laser light may be used to induce selective chemical reactions in molecular species which result in isotope separation or enrichment. The...
4648951 Photoionization technique to enrich mercury isotopes and apparatus therefor  
A simple photoionization technique for enriching a particular isotope of mercury in a naturally-occurring mixture employing an isotopically pure radiation source separately optimized for 253.7 nm....
4612097 Process for separation of zirconium isotopes  
The zirconium 91 isotopic content of zirconium is reduced by forming a solution of a zirconium compound and a scavenger of 8-hydroxyquinoline or its derivatives, and irradiating the solution with...
4584073 Process and apparatus for isotopic enrichment using lasers  
A process and apparatus for separating an isotope of an element from other isotopes of the element in a compound, where the compound is deposited as a monolayer on small glass beads, and the coated...
4567025 Chemical separation method for uranium isotopes  
A chemical process for isotopic enrichment of uranium involving the steps of exciting a chelated uranium compound (e.g. hydrated uranyl acetate complex in aqueous solution) to an excited electronic...
4554060 Photolytic separation of isotopes in cryogenic solution  
Separation of carbon isotopes by photolysis of CS 2 in cryogenic solutions of nitrogen, krypton and argon with 206 nm light from an iodine resonance lamp is reported. The spectral distribution of...
4514377 Process for the exchange of hydrogen isotopes between streams of liquid water and gaseous halohydrocarbon and an apparatus therefor  
Hydrogen isotope (e.g. deuterium) exchange from liquid water to a gaseous halohydrocarbon (e.g. fluoroform, CF 3 H--CF 3 D) is obtained at an operating temperature in the range 0° to 100° C....
4505791 Isotopic separation process  
The invention relates to an isotopic separation process. This process consists of exciting molecules A by the absorption of a pulsed light beam, then exciting molecules X present in several...
4374010 Photochemical separation of isotopes  
A method for photochemical separation or enrichment of isotopes of carbon-13 and oxygen-18 employing 123.58 nm resonance radiation of Kr of selected band-width and degrees of self-absorption in...
4357307 Method of separating isotopes in which a compounding of selectivity is achieved by limiting the timing of the collection step  
Methods for separating isotopes are disclosed including providing molecules which contain the element whose isotopes are to be separated and which have an isotopically shifted but overlapping...
4342727 Method for the separation of gaseous isotope compounds  
Separation of gaseous isotopes such as UF 6 by adiabatically expanding a gas stream containing the isotopes to cool to a temperature at which condensation or dimers are formed. Selectively...
4320300 Isotope separation by solar photoionization  
Isotope separation, particularly separation of isotopes of lithium, is achieved by exposing a beam of atoms to radiation that selectively excites atoms of a particular isotope without exciting...
4302305 Isotope separation process  
This application discloses a method of separating the isotopes of an element which form a volatile compound having an isotopically shifted but overlapping infrared absorption spectrum. In the...
4289592 Method of separating isotope compounds by selective excitation and reaction in a solid matrix  
Separation of an isotope substance from a vaporous mixture of isotope substances such as UF 6 , by selective excitation of low temperature of one isotope compound by electromagnetic radiation to...
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