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    Gas-filled spark chamber radiation detector
    1.
    发明授权
    Gas-filled spark chamber radiation detector 失效
    气体填充火焰室辐射探测器

    公开(公告)号：US3560746A

    公开(公告)日：1971-02-02

    申请号：US3560746D

    申请日：1968-08-14

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： LANSIART ALAIN ,  LELOUP JEAN ,  LEQUAIS JEAN

    IPC: H01J47/10 ,  G01T1/16 ,  H01J39/26

    CPC classification number: H01J47/10

    Abstract: The invention proposes a particle detector comprising a gasfilled chamber in which are disposed an anode and a cathode separated by a grid, these three electrodes being parallel and the gap between the grid and the cathode being of sufficient width for the type of incident radiation. The filling gas is selected in order to ensure that a high proportion of the Beta radiation which constitutes the incident particles or which is induced by incident particles at the cathode and/or within said gap loses the larger part of its energy by the usual ionization process which results in the release of electrons, said detector further comprising means for establishing between the anode and the grid a potential difference which is slightly smaller than the breakdown voltage and between the cathode and the grid a voltage for collecting said electrons towards the grid-anode gap, said collection voltage being sufficiently low and the mesh of the grid being sufficiently large to ensure that only a negligible proportion of electrons is collected by the grid as said electrons pass through said grid.

    Device for triggering a gas detector of nuclear particles, x-ray photons or gamma-ray photons
    3.
    发明专利
    Device for triggering a gas detector of nuclear particles, x-ray photons or gamma-ray photons 未知

    公开(公告)号：GB1028834A

    公开(公告)日：1966-05-11

    申请号：GB2281664

    申请日：1964-06-02

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： LANSIART ALAN ,  LELOUP JEAN ,  LEQUAIS JEAN

    IPC: G01T5/00 ,  H01J47/10

    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.

    4.
    发明专利
    未知

    公开(公告)号：FR2556244B1

    公开(公告)日：1986-08-08

    申请号：FR8319770

    申请日：1983-12-09

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： BARRAUD ANDRE ,  LELOUP JEAN

    IPC: B05C3/02 ,  B05C3/09 ,  B05C3/10 ,  B05C9/00 ,  B05C11/10 ,  B05C11/11 ,  B05D1/20 ,  H01L21/368 ,  H01C13/00

    Abstract: Tank for depositing a monomolecular film. It comprises a tank having walls and a base and containing a liquid, a barrier defining two areas on the surface of the liquid, means for displacing the barrier on the surface of the liquid, at least one substrate and means for displacing the substrate. The level of the liquid is below the horizontal rim of the tank. The barrier has a break at each of its ends and rests on the edges of the tank. The break defines a narrower portion partly submerged in the liquid. Sealing means are provided between the faces of the narrower portion and the facing walls.

    Particle detector
    5.
    发明专利
    Particle detector 未知

    公开(公告)号：GB1089018A

    公开(公告)日：1967-11-01

    申请号：GB1575865

    申请日：1965-04-13

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： LANSIART ALAIN ,  LELOUP JEAN ,  LEQUAIS JEAN

    IPC: H01J47/10

    Abstract: 1,089,018. Ionization chambers. COMMIS - SARIAT A L'ENERGIE ATOMIQUE. April 13, 1965 [April 17, 1964], No. 15758/65. Head. ing H1D. A nuclear particle detector for # particles and γ-ray or X-ray photons comprises parallel anode 30, mesh grid 28 and cathode 6 electrodes disposed in a gas-filled chamber and connected to supplies such that the anode-grid p.d. is slightly below the disruptive voltage and the grid-cathode p.d. and grid mesh size are such that only a negligible proportion of electrons is collected by the grid. The cathode 6 may comprise an alloy strip 8 lined with aluminium or gold foil 10 and supported by a plate 12 provided with colliminating passages 14. The cathode 6 and a glass plate 4, through which sparks initiated by electrons in the anode-grid gap may be photographed, are sealed to a cylindrical glass wall 2 by indium seals 16 and 18. The gas filling, e.g. 90% argon and 10% methane or xenon at atmospheric or higher pressure, may be changed by way of an orifice 26.

    7.
    发明专利
    未知

    公开(公告)号：DE3481110D1

    公开(公告)日：1990-03-01

    申请号：DE3481110

    申请日：1984-11-30

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： BARRAUD ANDRE ,  LELOUP JEAN

    IPC: B05C9/00 ,  B05C3/02 ,  B05C3/09 ,  B05C3/10 ,  B05C11/10 ,  B05C11/11 ,  B05D1/20 ,  H01L21/368

    Abstract: Tank for depositing a monomolecular film. It comprises a tank having walls and a base and containing a liquid, a barrier defining two areas on the surface of the liquid, means for displacing the barrier on the surface of the liquid, at least one substrate and means for displacing the substrate. The level of the liquid is below the horizontal rim of the tank. The barrier has a break at each of its ends and rests on the edges of the tank. The break defines a narrower portion partly submerged in the liquid. Sealing means are provided between the faces of the narrower portion and the facing walls.

    9.
    发明专利
    未知

    公开(公告)号：FR2556244A1

    公开(公告)日：1985-06-14

    申请号：FR8319770

    申请日：1983-12-09

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： BARRAUD ANDRE ,  LELOUP JEAN

    IPC: B05C3/02 ,  B05C3/09 ,  B05C3/10 ,  B05C9/00 ,  B05C11/10 ,  B05C11/11 ,  B05D1/20 ,  H01L21/368 ,  H01C13/00

    Abstract: Tank for depositing a monomolecular film. It comprises a tank having walls and a base and containing a liquid, a barrier defining two areas on the surface of the liquid, means for displacing the barrier on the surface of the liquid, at least one substrate and means for displacing the substrate. The level of the liquid is below the horizontal rim of the tank. The barrier has a break at each of its ends and rests on the edges of the tank. The break defines a narrower portion partly submerged in the liquid. Sealing means are provided between the faces of the narrower portion and the facing walls.

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