Recorder of X-ray photoelectronic hologram

A recording device, X-ray technology, applied in measurement devices, material analysis using radiation diffraction, optics, etc., can solve problems such as difficulty in realizing holographic microscopes, and achieve the effects of low artificial noise, elimination of interference noise, and convenient operation

Inactive Publication Date: 2004-11-10
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production of high-resolution Fresnel zone plates also faces the problem of high-resolution recording media
Therefore, the production of this holographic microscope is also difficult to achieve.

Method used

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  • Recorder of X-ray photoelectronic hologram
  • Recorder of X-ray photoelectronic hologram
  • Recorder of X-ray photoelectronic hologram

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Experimental program
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Embodiment Construction

[0022] X-ray photoelectron hologram recording device of the present invention as described above image 3 structure shown.

[0023] X-rays emitted from a synchrotron radiation source as an X-ray source 1 are filtered by the dispersion of a zone plate 2 and a pinhole diaphragm 3 . According to the property that the focal length of the zone plate 2 is inversely proportional to the wavelength, the X-rays of different wavelengths can be dispersed, and then the pinhole diaphragm 3 can be used to filter and reduce the linearity of the light source, and the size of the pinhole diaphragm 3 can be adjusted to obtain The desired spatially coherent quasi-monochromatic X-ray beam. The central wavelength of the zone plate 2 is 2.3 nm, the outermost ring width is 0.465 μm, the number of rings is N=1506, the radius of the zone plate 2 is ρ=1.4 mm, and the primary focal length is 566 mm. The distance between the zone plate 2 and the X-ray source 1 is selected as 10m, and the aperture d=8 μm...

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Abstract

A recorder of X-ray photoelectronic hologram for quickly real-time observing the 3D ultramicro structure of biological specimen in the natural state is disclosed. Its record method includes such steps as focusing X ray by waveband plate, filtering by pinhole diaphragm, overlap interference of the object beam passing through the opaque or semi-transparent part of specimen with the reference beam passing through its transparent part, converting the X-ray holography to photoelectronic interference field by photoelectronic cathode, accelerating, amplifying, sending to the computer, data processing and reproducing image.

Description

Technical field: [0001] The invention relates to a device for recording X-ray photoelectron holograms, in particular to a recording of holograms amplified by photocathode photoelectrons. Background technique: [0002] In recent years, due to the rapid development of synchrotron radiation sources and the advent of high-intensity X-ray lasers, the development of X-ray holography has been greatly promoted. In the prior art, there are two types of devices for recording X-ray holograms: [0003] 1. Gabor coaxial X-ray holographic recording device (see prior art [1] J.Opt.Soc.Am.(A), 1990, 7(10):1847-1861). figure 1 It is a schematic diagram of the Gabor coaxial X-ray hologram recording device. The polychromatic synchrotron radiation X-ray source 1 is filtered by a monochromator composed of a converging zone plate 2 and a pinhole diaphragm 3 to obtain quasi-monochromatic X-rays, part of which is used to provide illumination for the sample 4 to be tested as an object beam , the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/20G01N23/223G03B42/02
Inventor 高鸿奕陈建文谢红兰徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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