Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Device for recording off-axis X-ray hologram

A technology of X-ray and hologram, which is applied in the direction of material analysis using radiation, processing by application of diffraction/refraction/reflection, instruments, etc., can solve interference, cannot refract or reflect X-rays, and limit the development of off-axis X-ray holography technology and other issues to achieve the effect of convenient handling

Inactive Publication Date: 2004-01-28
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest shortcoming of the former is that the reproduced image is interfered by the twin image (see prior art: Chen Jianwen, Xu Zhizhan, Zhu Peiping, Wang Zhijiang, "X-ray holography", Progress in Physics, 1995, Vol.15, No.2, 125- 146); while the latter requires a high-resolution zone plate
The main reason for limiting the development of these technologies is that under normal conditions, the refractive index of X-rays is less than 1, and general optical elements cannot refract or reflect X-rays, thus limiting the development of off-axis X-ray holography.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for recording off-axis X-ray hologram
  • Device for recording off-axis X-ray hologram
  • Device for recording off-axis X-ray hologram

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The device used in this example is image 3 shown. In order to obtain X-rays with good monochromaticity, the X-ray source 1 in this embodiment is composed of a synchrotron radiation source 101, a dispersive zone plate 102 and a pinhole diaphragm 103. The diameter of the dispersive zone plate 102 is 2.8 mm, and the maximum The width of the outer ring is 0.465 μm, the number of rings is N=1506, and the focal length of the first-order diffraction is 566 mm. The working wavelength of the dispersive zone plate 102 is in the range of 1.97nm-2.78nm. The distance between it and the pinhole diaphragm 103 is 490 mm to 710 mm, and the working wavelength can be selected by changing the distance from the dispersion zone plate to the pinhole diaphragm 103 . The pinhole diameters are 8, 30, and 200 microns, respectively, and the spatial coherence of the beam is determined by the selection of the pinhole diameter. The distance from the synchrotron radiation source 101 to the dispers...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

A device for recording off-axis X-ray hologram has an X-ray source in the vacuum cavity in casing. The X-ray emitted from it is splitted into reference beam and object beam by a dual-waveband unit. The specimen to be tested it put before or behind the focus of object beam. The reference beam and object beam are crossed to form an interference field. A receiver in the interference field sends the received interference signal to computer, where a 3D hologram is reconstructed without twin images.

Description

technical field [0001] The invention relates to a device for recording off-axis X-ray holograms. Background technique [0002] Holography is a two-beam interference process, which records the specific wavefront of an object in the form of interference fringes, and then uses the principle of light diffraction to reproduce the recorded wavefront. [0003] Since the wavelength of X-rays is much smaller than that of visible light, a much higher resolution can be obtained than that of visible light; and because of the strong penetrability of X-rays, many objects that are "opaque" to visible light become "transparent" to X-rays. Therefore, X-ray holography has incomparable advantages to other imaging methods in the fields of natural science and life science: [0004] 1. High-resolution three-dimensional information of biological samples can be obtained. For X-ray holograms, it not only records the surface information of the sample, but also records the deep information of the sam...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04G02B5/00G03H1/04G21G1/12G21K1/06
Inventor 高鸿奕陈建文谢红兰徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com