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    Method and device for detecting chemical species using an inorganic semiconductor thin film
    4.
    发明专利
    Method and device for detecting chemical species using an inorganic semiconductor thin film 未知

    公开(公告)号：FR2652652A1

    公开(公告)日：1991-04-05

    申请号：FR8912838

    申请日：1989-10-02

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： JEAN LELOUP ,  HENRI PEREZ ,  ANNIE RUAUDEL ,  ZYLBERAJCH

    IPC: G01N27/12

    Abstract: The invention relates to a method and a device for detecting chemical species using an inorganic semiconductor thin film. According to this method, the gas or the solution containing the species to be detected is placed in contact (at 11b) with a sensitive element (9b) comprising at least one film of inorganic semiconductor material, for example tin oxide, copper sulphide or mercury sulphide, and the electrical conductivity of the film (9b) is compared with that of a reference film (9a) in controlled atmosphere (11a), which makes it possible to detect the presence of a chemical species at (11b).

    6.
    发明专利
    未知

    公开(公告)号：DE1296277B

    公开(公告)日：1969-05-29

    申请号：DEC0033086

    申请日：1964-06-09

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： ALAIN LANSIART ,  JEAN LELOUP ,  JEAN LEQUAIS

    IPC: G01T5/00 ,  H01J47/10 ,  H01J39/28

    Abstract: 1,028,834. Recording tracks of particles. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 2, 1964 [June 11, 1963], No. 22816/64. Heading G6P. In a device for indicating the distribution of a radio-active emitter over a given surface, a spark is formed at each point where radiation is incident on the indicator. The device consists of a vessel containing a low-pressure gas and a D.C. energized cathode and anode. A radiation particle enters the vessel, passing through the cathode, and causes electron multiplication in the gas. The D.C. voltage is so chosen that no spark is formed at this stage. An external circuit detects the electron pulse at the anode and causes an impulsive negative potential to be applied to the cathode, thus forming a spark at the point of impact of the radiation on the cathode. The metal cathode may be replaced by a scintillator and a photocathode.

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