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X-ray double frequency holographic interferometer

A holographic interference and X-ray technology, applied in the direction of instrument, optical instrument test, machine/structural component test, etc., can solve problems such as huge structure

Inactive Publication Date: 2005-08-24
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of interferometer obviously has a huge structure and has a wide range of applications in astrophysics, but it is powerless to detect it in the laboratory

Method used

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  • X-ray double frequency holographic interferometer
  • X-ray double frequency holographic interferometer
  • X-ray double frequency holographic interferometer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0041] image 3 It is a schematic diagram of an embodiment of a dual-frequency X-ray holographic interferometer of the present invention, which consists of five parts: X-ray source 1, microstrip plate 15, aperture diaphragm 16, detector 7 and computer 18.

[0042] Said X-ray source 1 is a synchrotron radiation source.

[0043] Said microstrip plate 15 is a micro-optical element with a diameter of 1mm and a waveband number greater than 500 that can focus X-rays.

[0044] Said pinhole stop 16 is a pinhole with a diameter of 10 μm, which is placed at the focus of the first-order X-ray diffraction produced by the zone plate 15 .

[0045] Said detector 7 is a charge-coupled device and a CCD capable of accepting soft X-rays.

[0046] Said computer 18 is a computer which can be used to carry out the reconstruction of the X-ray hologram.

[0047] During the test, the sample 17 to be tested, which may contain biological samples, is placed side by side with the aperture diaphragm 16 ...

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Abstract

The double-frequency holographic X-ray interferometer includes X-ray source, miniature zone plate, pinhole diaphragm, detector and computer. The miniature zone plate is one miniature optical element of 1 mm diameter and 500 over wave zone number and capable of focusing X-ray; the pinhole diaphragm is set at the focus of the primary X-ray diffraction the miniature zone plate produces; the detector is one charge coupler capable of accepting X-ray; and the computer is used in re-constructing X-ray diffraction hologram. The present invention has adjustable sensitivity up to two times of that of common interferometer in the same wavelength.

Description

Technical field: [0001] The invention relates to an X-ray interferometer, in particular to an X-ray double-frequency holographic interferometer, which is mainly used for high-precision detection of various spherical mirrors and laser plasma. Background technique: [0002] As we know, the resolution of any imaging system is inversely proportional to the wavelength. In order to obtain high resolution, a short wavelength is always sought, so the electron microscope was invented, although the de Broglie wavelength of the electron is very short , but its ability to penetrate the sample is poor. In order to overcome this deficiency, people use X-rays as the illumination source. [0003] In recent years, due to the rapid development of synchrotron radiation, laser plasma X-rays and micro-optical components, X-ray holography and X-ray interference technology have also made great progress. There are two types of X-ray interferometers currently in use. One is to place three near-per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B9/02G01M11/00G03H1/04G03H5/00
Inventor 陈建文高鸿奕谢红兰李儒新徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI