中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

106 records (took 0.03 seconds)

    Peaked monochromator
    85.
    发明专利
    Peaked monochromator 未知

    公开(公告)号：GB1141612A

    公开(公告)日：1969-01-29

    申请号：GB1698366

    申请日：1966-04-18

    Applicant: APPLIED RES LAB INC

    IPC: G01J3/18 ,  G01J3/24 ,  G02B5/18 ,  G21K1/06

    Abstract: 1,141,612. X-Ray diffraction apparatus with blazed grating. APPLIED RESEARCH LABORATORIES Inc. 18 April, 1966 [21 April, 1965], No. 16983/66. Heading H5R. [Also in Division G2] In a spectrograph comprising a sharply blazed diffraction grating the input and output angles are so varied that for each wavelength of interest the condition for constructive interference is satisfied at the peak of the blaze. Where the grating is reflective this is accomplished by making the output angle differ from the input angle by twice the blaze angle of the grating or in a transmission grating, having a small blaze angle, by making the output angle differ from the input angle by approximately the product of the refractive index of the grating minus unity, times the blaze angle. When the radiation is of short wavelengths, such as in the soft X-ray region, additionally, the angle between the incident light and the reflecting facets of the grooves of the grating is kept smaller than the critical angle of total external reflection so that the grating highly discriminates against second and higher orders. As shown, Fig. 2, a bell crank 64 is pivoted at 70, 76, to define a chord of the Rowland circle 18, the centre of which lies at the apex 68 of the bell crank. The pivots 70, 76, slide in slots 72, 62, whose extensions would melt at 14 where the input slit is placed, the slots 72, 62 being inclined to each other at an angle equal to one half the apex angle of the bell crank 64. The grating 11, which has a radius of curvature twice that of the Rowland circle 18, fixed to the bell crank 64 at the pivot 76, the latter being moved along slot 62 by a screw 81 and nut 80. A parallelogram linkage 26, 27, 28, 29 has two arms 26, 27 pivoted together in line with the centre of grating 11, the arm 26 being fixed to nut 80 and held in alignment with screw 81, so that it is always at the input angle relative to grating 11. Arms 28, 29 have their common pivot 31 sliding in a guideway 69 in the outer end of arm 65 of the bell crank 64. The output slit 20 and detector 22 are mounted on a carriage 24 which is slidable along a guideway 34 and maintained on the Rowland circle 18 by a link 98 pivoted at the apex 68. The guideway 34 is pivoted on the pivot 76 and adjustably fixed to the arm 27, such as by the screw arrangement 36, so that the difference between the input and output angles is kept constant and made equal to twice the blaze angle of the grating 11.

    Magnetic sector lens
    86.
    发明专利
    Magnetic sector lens 未知

    公开(公告)号：GB1129690A

    公开(公告)日：1968-10-09

    申请号：GB4418466

    申请日：1966-10-04

    Applicant: APPLIED RES LAB INC

    IPC: H01J49/20

    Abstract: 1,129,690. Mass spectrometers. APPLIED RESEARCH LABORATORIES Inc. 4 Oct., 1966 [11 Oct., 1965 (2)], No. 44184/66. Heading H1D. A magnetic mass spectrometer has a wedgeshaped sector field with stigmatic focusing properties, the planar exit and entrance boundaries 26, 29 of the field being at right-angles to one another. The ion source 24 is located on the axis 20 formed by the intersection of the inclined pole faces of the field and is spaced a distance B from the exit boundary 26 which is equal to 1À347 times the distance A between the axis 20 and the entrance boundary 29. The distance C between the median plane 32 of the emergent ions and the axis 20 is equal to 2À1 times the distance A and the arrangement is such that the paths of the emergent ions are parallel. In practice the pole faces are not rectangular, as shown, but curved to conform with the curvature of the ion paths through the field and the angle between the pole faces 10, 12 is about 10 to 20 degrees. In a double focusing mass spectrometer the magnetic sector is combined with a 45-degree electrostatic spherical condenser arranged either before or after the magnetic sector.

    Electrical control circuit
    88.
    发明专利
    Electrical control circuit 未知

    公开(公告)号：GB1105170A

    公开(公告)日：1968-03-06

    申请号：GB134167

    申请日：1965-09-22

    Applicant: APPLIED RES LAB INC

    IPC: G01J3/06 ,  G01N23/20 ,  G01N23/207

    Abstract: 1,105,170. Programmed control; spectrometers. APPLIED RESEARCH LABORATORIES Inc. Sept. 22, 1965 [Sept. 22, 1964], No.1341/67. Divided out of 1, 105, 169. Headings G2J and G3N. [Also in Division F2] A spectrometer contains a number of elements which are controlled by a circuit comprising means for producing a trigger signal, in response to an input signal, to render a bi-stable multi-vibrator conductive in one mode and means responsive to the output of the multi-vibrator for maintaining a first element in an energized condition and a second element in a de-energized condition so long as the multi-vibrator conducts in the one mode and for maintaining the second element energized and the first element de-energized so long as the multi-vibrator conducts in the other mode. As shown a spectrometer is driven by a motor 10 through a clutch and high and low speed gears selectively actuated by solenoids 22, 28, 26 respectively, and a brake is actuated by a solenoid 23. A programme disc (not shown) is driven by the gears and holes are detected by a photo-sensor 64 the output of which triggers a Schmitt circuit 70. With the switch 74 in the INTEGRATE position the output from the trigger circuit 70 is fed to a one shot multi-vibrator 76 with adjustable pulsewidth output, set by a stepping circuit or relay tree (not shown). The tracking edge of the pulse from the multi-vibrator 76 is fed to change the state of a second bi-stable multi-vibrator 78 to cause the solenoid 23 to be energized and the solenoid 22 to be de-energized thereby stopping the travel of the spectrometer. The spectrometer pulses are then integrated by an arrangement (not shown) during a specified time or, alternatively, the time for a specified number of pulses is determined. At the end of the counting period the initial states of the multi-vibrators 72, 78 are restored and the spectrometer proceeds at high speed to the next programme hole. With the switch 74 in the PROFILE mode, the drive remains in slow speed during the passage of each hole across the photo-sensor 64, which is effected by shorting a diode 86 so that the multi-vibrator 72 responds to both the leading and trailing edges of the output pulse from the Schmitt circuit 70, the multi-vibrator 76 being isolated. In the MANUAL mode the multi-vibrator 72 is held in a desired state by bias B+, B-. The limits to the excursion of the spectrometer turn-table in the INTEGRATE and PROFILE modes are set by switches 90, 92 and limit switches 100, 101 protect against over travel by isolating the supply to the motor 10 through a relay 102. The direction of travel of the motor 10 is determined by a relay 108 energized through the selector switch 74, the programme being read in one direction only, the return being at high speed under control of a reset relay 110 which with relay 108 is controlled by a switch 92 or a manual reset 116.

    89.
    发明专利
    未知

    公开(公告)号：FR1447679A

    公开(公告)日：1966-07-29

    申请号：FR32264

    申请日：1965-09-22

    Applicant: APPLIED RES LAB INC

    IPC: G01N23/20

    Improvements in or relating to calculators
    90.
    发明专利
    Improvements in or relating to calculators 未知

    公开(公告)号：GB919384A

    公开(公告)日：1963-02-27

    申请号：GB3730160

    申请日：1960-10-31

    Applicant: BRITISH IRON STEEL RESEARCH ,  APPLIED RES LAB GREAT BRITAIN

    Inventor： SERMIN DENNIS FRANCIS ,  TYAS RONALD HAROLD

    IPC: G06G1/00

    Abstract: 919,384. Calculating apparatus. BRITISH IRON & STEEL RESEARCH ASSOCIATION, and APPLIED RESEARCH LABORATORIES (GREAT BRITAIN) Ltd. Jan. 26, 1962 [Oct. 31, 1960], No. 37301/60. Class 106 (1). The device calculates the X-ray mass absorbtion coefficients Á/p of a first set of elements at the wavelengths of X-ray emission lines of elements of a second set (Á=X-ray linear absorbtion coefficient; p=density of element). The elements of the first set particularly described are the series Neon to Bismuth and the elements of the second set are the series Sodium to Bismuth, although it is stated that the sets may be extended. The emission lines are the first two K lines and the first three L lines. The calculator may also be used to predict qualitatively enhancement phenomena. The described calculator is circular, although it is stated that it may be linear, and comprises three relatively rotatable discs. The top disc 1 carries scales 8, 9 marked with values proportional to the X-ray mass coefficients concerned and which meet at the line 10. The intermediate disc 2 carries an outer name scale 13 on which the names of the elements of the first set are marked at angular distances proportional to the logarithms of the wavelengths of the K absorbtion edges of the elements, two scale factor scales which appear at windows 28, 29 of disc 1, and five scales carrying the names of the elements of the second set which appear at a labelled window 16 of disc 1 which distinguishes the elements on each scale. The lower disc 3 carries on an arcuate extension a scale 35 and has a window 33 (Fig. 2) at which appear elements of the second set marked on the reverse side of disc 2 which also carries a name scale 50 calibrated in similar manner to the scale 13. The three scales correspond to the cases in which the K and L edges of an element lie both to the right, or to the left, or one on each side, of the wavelength of the X-ray emission line at which the mass absorption coefficient is to be calculated. This is explained in the Specification with reference to Figs. 8 and 9 (not shown). To calculate the mass absorption coefficient of an element at the wavelength of the first K emission wavelength of, say, Argon, the disc 2 is rotated until the symbol A (Argon) appears at the Kα section of window 16. The calculator is reversed and disc 3 rotated until A appears at the Kα section of window 33. The coefficient of an element is found by reading off the value on scale 8, 9 or 35 as appropriate against the name of the element and multiplying it by the scale factor appearing at windows 28, 29 or 40, respectively. Where scale 35 overlaps scales 8 or 9, scale 35 is used. If a compound is to be analysed for presence of an element by determining the intensity of one of the K lines, the name of the element on scale 13 is placed against the reference line 10 on disc 1. At the window 16 appears the names of the emission lines of these elements which if present in the compound would enhance the K lines of the element under investigation. If the top disc 1 is rotated clockwise relative to disc 2 the names appearing at the window 16 are of those emission lines which cannot enhance the K lines of the investigated element, while if the disc 1 is rotated anticlockwise the names of other emission lines which enhance the K lines appear. The intensity of the enhancement decreases with the rotation. The window 33 and scale 50 on the reverse side of calculator can be used in the same way for investigation of the L lines. The three scales 8, 9 and 35 and the corresponding scale factors may be differently coloured.

Patent Agency Ranking