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    21.
    发明专利
    未知

    公开(公告)号：DE2617043A1

    公开(公告)日：1976-11-04

    申请号：DE2617043

    申请日：1976-04-17

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： KALDOR ANDREW

    IPC: B01D59/34 ,  G02B27/00

    Abstract: 1526512 Producing selective excitation by electromagnetic radiation EXXON RESEARCH & ENG CO 27 Feb 1976 [23 April 1975] 07828/76 Heading G6P In a process of isotope separation involving isotopically selective excitation (by irradiation with electromagnetic radiation) under conditions in which vibrational excitation by multiple photon absorption occurs, thermal electrons are attached to the excited species to form negative ions which decompose to form ion fragments which can be separated out. The mixture to be separated comprises a molecular gas of a compound whose general formula is MF 6 where M is one of U, S, W, Se, Te, Mo, Re and Tc. Helium may be added as a buffer gas. The process involves three stages, namely :- (1) Irradiation by infrared (e.g. pulsed CO 2 ) laser for less than 10 -3 sec. Such that at least 0À1% of the molecules of one isotope are excited to a vibrational energy content of 4v3 by multiphoton absorption. (2) Thermal electrons (e.g. generated by an electron gun) are contacted with the mixture and become attached to both excited and unexcited molecules to form negative ions MF 6 - (unexcited) and *MF 6 - (excited). The ratio of thermal electrons to total MF 6 molecules is at least 0À1. Contact occurs for less than 10 -3 sec. in order to minimize thermal dilution. (3) The MF 6 - ions do not dissociate, but the *MF 6 - do so rapidly (i.e. *MF 6 - #MF 5 - +F). If a chemical reaction is used to separate the fractions, MF 6 will remain in the gaseous phase while MF 5 will precipitate. Electromagnetic separation can be used.

    22.
    发明专利
    未知

    公开(公告)号：SE7602396L

    公开(公告)日：1976-10-24

    申请号：SE7602396

    申请日：1976-02-25

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： KALDOR ANDREW

    IPC: B01D59/34 ,  G02B27/00

    Abstract: 1526512 Producing selective excitation by electromagnetic radiation EXXON RESEARCH & ENG CO 27 Feb 1976 [23 April 1975] 07828/76 Heading G6P In a process of isotope separation involving isotopically selective excitation (by irradiation with electromagnetic radiation) under conditions in which vibrational excitation by multiple photon absorption occurs, thermal electrons are attached to the excited species to form negative ions which decompose to form ion fragments which can be separated out. The mixture to be separated comprises a molecular gas of a compound whose general formula is MF 6 where M is one of U, S, W, Se, Te, Mo, Re and Tc. Helium may be added as a buffer gas. The process involves three stages, namely :- (1) Irradiation by infrared (e.g. pulsed CO 2 ) laser for less than 10 -3 sec. Such that at least 0À1% of the molecules of one isotope are excited to a vibrational energy content of 4v3 by multiphoton absorption. (2) Thermal electrons (e.g. generated by an electron gun) are contacted with the mixture and become attached to both excited and unexcited molecules to form negative ions MF 6 - (unexcited) and *MF 6 - (excited). The ratio of thermal electrons to total MF 6 molecules is at least 0À1. Contact occurs for less than 10 -3 sec. in order to minimize thermal dilution. (3) The MF 6 - ions do not dissociate, but the *MF 6 - do so rapidly (i.e. *MF 6 - #MF 5 - +F). If a chemical reaction is used to separate the fractions, MF 6 will remain in the gaseous phase while MF 5 will precipitate. Electromagnetic separation can be used.

    23.
    发明专利
    未知

    公开(公告)号：NO163653C

    公开(公告)日：1990-06-27

    申请号：NO820237

    申请日：1982-01-27

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： STEIN ALEXANDER ,  RABINOWITZ PAUL ,  KALDOR ANDREW

    IPC: B62B13/10 ,  G01J5/00 ,  G01J9/04

    Abstract: The present invention concerns an unique laser radiometer capable of accurately measuring the radiation temperature of a radiant surface and independently measuring the surface's emissivity. A narrow-band radiometer is combined with a laser reflectometer to measure concurrently radiance and emissivity of a remote, hot surface. Together, radiance and emissivity yield the true surface temperature of the remote target. A narrow receiver bandwidth is attained by one of two methods; (a) heterodyne detection or (b) optical filtering. A direct measurement of emissivity is used to adjust the value obtained for the thermal radiation signal to substantially enhance the accuracy of the temperature measurement for a given subject surface. The technique provides substantially high detection sensitivity over a very narrow spectral bandwidth.

    24.
    发明专利
    未知

    公开(公告)号：NO163653B

    公开(公告)日：1990-03-19

    申请号：NO820237

    申请日：1982-01-27

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： STEIN ALEXANDER ,  RABINOWITZ PAUL ,  KALDOR ANDREW

    IPC: B62B13/10 ,  G01J5/00 ,  G01J9/04

    Abstract: The present invention concerns an unique laser radiometer capable of accurately measuring the radiation temperature of a radiant surface and independently measuring the surface's emissivity. A narrow-band radiometer is combined with a laser reflectometer to measure concurrently radiance and emissivity of a remote, hot surface. Together, radiance and emissivity yield the true surface temperature of the remote target. A narrow receiver bandwidth is attained by one of two methods; (a) heterodyne detection or (b) optical filtering. A direct measurement of emissivity is used to adjust the value obtained for the thermal radiation signal to substantially enhance the accuracy of the temperature measurement for a given subject surface. The technique provides substantially high detection sensitivity over a very narrow spectral bandwidth.

    ISOTOPE SEPARATION PROCESS
    28.
    发明专利
    ISOTOPE SEPARATION PROCESS 未知

    公开(公告)号：AU1171376A

    公开(公告)日：1977-09-08

    申请号：AU1171376

    申请日：1976-03-05

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： LYON RICHARD KENNETH ,  KALDOR ANDREW

    IPC: B01D59/34 ,  G02B27/00 ,  B01D59/28

    Abstract: The instant invention relates to a process for separating a material into two or more parts in each of which the abundances of the isotopes of a given element differ from the abundances of the isotopes of the same material in said material. More particularly, the invention relates to a method for the isotopically selective excitation of gas phase UF6 by infrared photon absorption followed by selective reaction of said excited UF6 with atomic chlorine, bromine, or iodine to form a product which may be separated by means known in the art.

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