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    Electron probe x-ray analyzer
    91.
    发明专利
    Electron probe x-ray analyzer 未知

    公开(公告)号：GB903906A

    公开(公告)日：1962-08-22

    申请号：GB1486561

    申请日：1961-04-25

    Applicant: APPLIED RES LAB

    IPC: G01N23/225 ,  H01J37/20 ,  H01J37/22 ,  H01J37/252

    Abstract: 903,906. X-ray tubes. APPLIED RESEARCH LABORATORIES Inc. April 25, 1961 [Aug. 29, 1960], No. 14865/61. Class 39 (1). In apparatus for irradiating a specimen with electrons and sensing X-rays emitted therefrom, an electron beam is focused upon a selected region of the specimen 36 by an electron lens 30 and the X-ray sensing means is arranged to receive X-rays which pass through the lens in a direction opposite to that of the electron beam. Means for producing an optical image of the specimen are also provided. As shown, an electron beam from gun 14 passes through a condenser lens 22 between diaphragms 20, 28, 34. Movable fluorescent screens 24, 32 are provided for monitoring the beam during preliminary adjustments. The specimen 36 is located at the focus of objective lens 30 which comprises magnetic plates 50, 52 having conical apertures, a depending annular coil in housing 54 and six radially-extending, ferromagnetic, adjustment screws 60. Both magnetic lenses 22, 30 are liquid-cooled. Mirrors 38, 72, 74 enable the specimen to be viewed through eyepiece 76. One or more spectrometers 40 are each mounted in a plane containing the electron beam axis and each includes a diffraction crystal 66 mounted for rotation upon itself and for translation along the 52.5 degree emergence angle of the X-rays, and a detector 92 travelling synchronously therewith. The specimen 36 is held by a spindle 42 which is rotatable and axially movable relative to a slide 96, which is itself movable in a direction transverse to the electron beam axis. A selector 114, rotatably supported on slide 96, holds a plurality of different specimens which may be selectively raised by spindle 42 to the analysis position. Gate valves 18 and 128 are provided to permit changing of the electron gun filament and of the specimens in selector 114 without breaking the vacuum in the main chamber 10.

    96.
    发明专利
    未知

    公开(公告)号：SE7703880L

    公开(公告)日：1978-10-05

    申请号：SE7703880

    申请日：1977-04-04

    Applicant: APPLIED RES LAB

    Inventor： LINDBLOM K P

    IPC: G01J3/18

    Abstract: To eliminate astigmatism and coma in a spectrograph the distance between the entrance slot and a first concave mirror, as well as the relative angular positions of the entrance slot, the plane grating, the two concave mirrors and the focal plane are selected so as to satisfy the following conditions. +TR

    100.
    发明专利
    未知

    公开(公告)号：DE1573982A1

    公开(公告)日：1970-04-16

    申请号：DE1573982

    申请日：1965-11-15

    Applicant: APPLIED RES LAB INC

    Inventor： H SMALLBONE ALLAN

    IPC: G01N1/28 ,  G01N23/22 ,  G01T7/02

    Abstract: 1,090,440. Rotary table compression moulding machine. APPLIED RESEARCH LABORATORIES Inc. Nov. 1, 1965 [Nov. 19, 1964], No. 28159/67. Divided out of 1,090,439. Heading B5A. A rotary table compression moulding machine, particularly for making briquettes for subsequent X-ray analysis, comprises an intermittently rotating hub 40 carrying radial arms 44-49 each of which is provided with a through bore 50. Each arm carries upper and lower pressing pistons, 52 and 54 which are pivoted to the outer ends of levers 56 and 58, the levers themselves being centrally pivoted about rollers 98 mounted upon the arm. The levers are moved along the arm, to bring the pistons into a position overlying the bore, by cam actuated rods 61 and 62 connected to rollers 98, and are pivoted, to insert the pistons into the bore, by means of second, cam actuated rods 62 and 64 connected to the inner ends of the levers. In operation, starting from a position in which the upper piston is radially retracted and the lower piston is located in the bore, each arm is first indexed to a station B, where the bore is filled by a hopper 76, and then to a station D, during which time the upper piston is forwarded and pivoted into the bore to effect a preliminary compression. At station D, the pistons are engaged between upper and lower press jaws to fully compress the material, after which the lower piston is lowered and radially retracted, the upper piston is lowered to push the formed briquette from the bore, and the arm is indexed to a last station F. At station F the lower piston is forwarded to knock the briquette off the lower end of the upper piston on to a take-off device such as conveyer 74.

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