摘要:
Vor dem mit dem äußeren Goniometerkreis (4) präzise verstellbaren Detektor (5) wird eine Diagonalschlitzblende (10) angeordnet und durch horizontales Verstellen des äußeren Goniometerkreises das Maximum des Detektorausgangssignals aufgesucht. Aus der Winkelabweichung läßt sich trigonometrisch die Höhenabweichung des Strahles zur Sollhöhe (h) bestimmen und die Lochblende (9) entsprechend verstellen. Die Erfindung wird angewandt zur Einstellung der Lochblenden bei Diffraktometern.
摘要:
An inspection apparatus 20 is for an inspection of a target region 13 including a part of a subsurface portion 12 of a sample 10 having an approximately circular cross section. The inspection apparatus 20 includes an X-ray source 40 that emits X-rays, a crystal plate 70 being a single crystal, and a detector 80. The crystal plate 70 is disposed to reflect and diffract X-rays (refractive X-rays X5) having been emitted by the X-ray source 40 and refracted in the target region 13. The crystal plate 70 is disposed to allow X-rays (rectilinear X-rays X3) having been emitted by the X-ray source 40 and entering the crystal plate 70 without having been incident on the sample 10 to transmit through the crystal plate 70. The detector 80 detects an intensity of the X-rays (reflected and diffracted X-rays X7) reflected and diffracted by the crystal plate 70.
摘要:
A micro beam generation unit capable of simultaneously capturing anisotropic images in a high signal-to-background ratio with a compact configuration and an X-ray small-angle scattering apparatus are provided. A micro beam generation unit 110 generates X-rays having a micro spot size, with which a sample is irradiated, in order to detect diffracted X-rays by a one-dimensional detector or a two-dimensional detector. The micro beam generation unit 110 includes a slit 115 that is provided on an X-ray optical path and reshapes X-rays into parallel beams, and two channel-cut monochromator crystals 117 and 118 that are arranged in arrangement of (+, -, -, +) and remove parasitic scattering of parallel beams reshaped by the slit. Accordingly, it is possible to simultaneously obtain anisotropic images in a high signal-to-background ratio with a compact configuration.
摘要:
An x-ray diffraction apparatus is provided having an x-ray diffraction head, a frame for supporting the x-ray diffraction head, and a pair of drive mechanisms of the frame configured to generate pivotal movement of the x-ray diffraction head about first and second orthogonal axes. The frame is configured such that operation of one of the drive mechanisms to rotate the x-ray diffraction head about the first axis generates rotation of both of the drive mechanisms about the first axis.
摘要:
Method of measuring scattering of X-rays, characterized in that a compound to be analyzed is installed in a receptacle (1) comprising a flat bottom permeable to X-rays, in that an analysis by scattering of the X-rays is carried out by sending a stream of X-rays upwards in the direction of said bottom permeable to the X-rays and by measuring the stream of scattered X-rays that is reflected downwards, and in that a thermostatically controlled fluid at the same temperature as that of the compound to be analyzed in the receptacle is projected towards the flat bottom (3) permeable to X-rays, from outside the receptacle (1), and device for measuring scattering of X-rays characterized in that it comprises a receptacle (1) comprising a bottom shut off by a membrane (3) transparent to X-rays, as well as a diffractometer whose goniometer (4, 5) is installed so as to direct a beam of X-rays from below towards the membrane (3) transparent to X-rays and the detector (5) being installed for the measurement of the X-rays scattered therebelow.
摘要:
The invention relates to a method for controlling the treatment of a crystal (2) by means of a liquid, wherein an image signal is captured by an image capturing system (200), said image signal representing a momentary image of a crystal having drops poured thereon by an electrically controllable microdosing system (11, 300), said image signal having a liquid environment whereby the image signal is treated and the momentary surface of the crystal and the liquid environment thereof is determined in the entire image by the image signal; the momentary surface is compared to a predefined desired value and a corrector drop control signal is determined and sent to the microdosing system if the surface is different from the desired value and the corrector drop signal is formed in such a manner that it represents a corrected frequency and/or variable and/or form of the drops which are to be applied to the crystal and the liquid environment thereof, which are selected such that the difference with respect to the desired value is minimised.
摘要:
The invention relates to a method for controlling the treatment of a crystal (2) by means of a liquid, wherein an image signal is captured by an image capturing system (200), said image signal representing a momentary image of a crystal having drops poured thereon by an electrically controllable microdosing system (11, 300), said image signal having a liquid environment whereby the image signal is treated and the momentary surface of the crystal and the liquid environment thereof is determined in the entire image by the image signal; the momentary surface is compared to a predefined desired value and a corrector drop control signal is determined and sent to the microdosing system if the surface is different from the desired value and the corrector drop signal is formed in such a manner that it represents a corrected frequency and/or variable and/or form of the drops which are to be applied to the crystal and the liquid environment thereof, which are selected such that the difference with respect to the desired value is minimised.
摘要:
An X-ray analysis apparatus comprises a central control device which includes means for recording simulated beam paths in the apparatus, thus enabling correction for the effects of radiation-optical deviations as well as of other deviations in the apparatus or a specimen on detection signals. Such a correction facility allows for construction of an apparatus having a large number of freedoms and hence a universal application.
摘要:
Vor dem mit dem äußeren Goniometerkreis (4) präzise verstellbaren Detektor (5) wird eine Diagonalschlitzblende (10) angeordnet und durch horizontales Verstellen des äußeren Goniometerkreises das Maximum des Detektorausgangssignals aufgesucht. Aus der Winkelabweichung läßt sich trigonometrisch die Höhenabweichung des Strahles zur Sollhöhe (h) bestimmen und die Lochblende (9) entsprechend verstellen. Die Erfindung wird angewandt zur Einstellung der Lochblenden bei Diffraktometern.