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    Geiger-Muller tubes and their manufacture
    143.
    发明专利
    Geiger-Muller tubes and their manufacture 未知

    公开(公告)号：GB2234627A

    公开(公告)日：1991-02-06

    申请号：GB8915788

    申请日：1989-07-10

    Applicant: PHILIPS ELECTRONIC ASSOCIATED

    Inventor： GAIR SALEM ABRAHAM ,  COPLESTON RONALD EDWARD

    IPC: E21B47/01 ,  G01T1/18 ,  H01J47/08

    Abstract: A Geiger-Muller tube designed for use in an environment subjected to mechanical shock and vibration has a tensioned anode wire (1) secured between first and second mounts (11, 21) located (12, 22) at opposite ends of the tube envelope (10). The wire tension is adjusted, preferably with a screwible-adjustment means (22, 23, 24) which is locked (*25) in the adjusted position, so that the natural frequency of vibration of the tensioned wire (1) does not resonate with any frequency to which the tube is subjected in use. The adjustment means (22, 23, 24) may be included in the mount (12, 22) via which the envelope is evacuated and back-filled with the ionizible gas, and a gas-tight seal (30) can be provided around this part of the mount (12, 22), for example by sealing off the gas pump tube. However the adjustment means may be designed into another part of the tube, for example using telescopic parts of the envelope whose sliding junction is made gas tight with a flexible seal. Alternatively, the desired tension may be obtained by welding the wire to the first mount (11, 21), passing it through the second mount (12, 22), tensioning it and then crimping it to the second mount (12, 22).

    ENERGY FILTER FOR A GEIGER-MULLER TUBE
    147.
    发明专利
    ENERGY FILTER FOR A GEIGER-MULLER TUBE 未知

    公开(公告)号：AU570158B2

    公开(公告)日：1988-03-03

    申请号：AU2329884

    申请日：1984-01-16

    Applicant: PHILIPS NV

    Inventor： BARCLAY DAVID ,  BURGESS PETER HAMILTON

    IPC: H01J47/08 ,  G01T1/18 ,  G21K1/10 ,  G21K3/00

    Abstract: A gamma -ray energy filter for improving the uniformity of the response of a Geiger-Müller tube (1) comprises two and only two spaced bodies (6, 7). To improve the uniformity of the energy response, the bodies (6, 7) consist of a lead/tin alloy containing substantially less than 95% but not substantially less than 40%, and suitably 50-60%, of lead. To improve the polar response, particularly in directions well away from the normal to the longitudinal axis and at quite low energies, adjacent edges (26, 27) of the bodies (6, 7) are inclined to the longitudinal axis over a majority of their radial thickness at less than 45 DEG , and circumferentially-spaced apertures (19) with axes inclined to the longitudinal axis are provided in one of the bodies (6).

    ENERGY FILTER FOR GEIGER-MULLER TUBE
    148.
    发明专利
    ENERGY FILTER FOR GEIGER-MULLER TUBE 未知

    公开(公告)号：GB2133960B

    公开(公告)日：1986-07-02

    申请号：GB8301155

    申请日：1983-01-17

    Applicant: PHILIPS ELECTRONIC ASSOCIATED

    Inventor： BARCLAY DAVID ,  BURGESS PETER HAMILTON

    IPC: H01J47/08 ,  G01T1/18 ,  G21K1/10 ,  G21K3/00

    Abstract: A gamma -ray energy filter for improving the uniformity of the response of a Geiger-Müller tube (1) comprises two and only two spaced bodies (6, 7). To improve the uniformity of the energy response, the bodies (6, 7) consist of a lead/tin alloy containing substantially less than 95% but not substantially less than 40%, and suitably 50-60%, of lead. To improve the polar response, particularly in directions well away from the normal to the longitudinal axis and at quite low energies, adjacent edges (26, 27) of the bodies (6, 7) are inclined to the longitudinal axis over a majority of their radial thickness at less than 45 DEG , and circumferentially-spaced apertures (19) with axes inclined to the longitudinal axis are provided in one of the bodies (6).

    149.
    发明专利
    未知

    公开(公告)号：FI840129A0

    公开(公告)日：1984-01-13

    申请号：FI840129

    申请日：1984-01-13

    Applicant: PHILIPS NV

    Inventor： BARCLAY DAVID ,  BURGESS PETER HAMILTON

    IPC: H01J47/08 ,  G01T1/18 ,  G21K1/10 ,  G21K3/00 ,  G01T

    Abstract: A gamma -ray energy filter for improving the uniformity of the response of a Geiger-Müller tube (1) comprises two and only two spaced bodies (6, 7). To improve the uniformity of the energy response, the bodies (6, 7) consist of a lead/tin alloy containing substantially less than 95% but not substantially less than 40%, and suitably 50-60%, of lead. To improve the polar response, particularly in directions well away from the normal to the longitudinal axis and at quite low energies, adjacent edges (26, 27) of the bodies (6, 7) are inclined to the longitudinal axis over a majority of their radial thickness at less than 45 DEG , and circumferentially-spaced apertures (19) with axes inclined to the longitudinal axis are provided in one of the bodies (6).

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