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Sphere stereoscopic recording method for X-ray hologram possessing atom resolution

A recording method, X-ray technology, applied in the field of X-ray holography, can solve problems such as inconvenient, difficult experimental work, discontinuous sampling data, etc., and achieve high precision and high efficiency

Inactive Publication Date: 2005-04-06
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

[0007] Obviously, to take a hologram, if the polar angle and azimuth angle sampling step are both 1°, then 180×360=64800 pieces of information must be recorded, which is obviously very inconvenient, even so, the sampling data is Discontinuous, if the X-ray source is unstable, it will bring great difficulties to the experimental work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A spherical recording method of an X-ray hologram with atomic resolution comprising the steps of:

[0020] 1. In the darkroom, stick a hard X-ray film inside a hollow hemisphere with a radius of 15 cm. This hard X-ray film can be purchased in the market, such as Kodak film;

[0021] 2. Place the sample of the atomic image to be measured in the center of the hemisphere with a hard X-ray film;

[0022] 3. Place a hard X-ray band-pass filter between the hemisphere with the hard X-ray film and the sample;

[0023] 4. Turn on the synchrotron radiation source, irradiate the sample to be tested with X-rays, and expose the film;

[0024] 5. Develop, fix, rinse and dry the exposed film;

[0025] 6. Flatten the exposed film, scan it with a blackness meter to obtain digital image data, enter the computer for digital reconstruction, and obtain an atomic image with atomic resolution.

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Abstract

It is X-ray holograph sphere solid record method with atom resolution, which comprises the following steps: to stick a hard X-ray soft pad to a hollow inner side of a semi-sphere in a dark house; to put the sample of the atom image sample to the right center of the semi-sphere with hard X-ray negative; to put a hard X-ray band filter between X-ray negative and sample; to switch synchronization radiation source and let the X-ray shoot the sample and to expose the negative; to develop and fix and wash and dry the exposed negative ; to stretch the exposed negative and to scan with black meter to get digital image data and to enter computer for digital recreation to get atom image with atom resolution.

Description

technical field [0001] The invention relates to X-ray holography, in particular to a spherical three-dimensional recording method of an X-ray hologram with atomic resolution, which has great application in observing the three-dimensional structure of atoms. Background technique [0002] The structural information of the three-dimensional arrangement of atoms or molecules of matter is the basis of physics, materials science, chemistry, and biology. For nearly a century, scientists have sought ways to determine the three-dimensional structure of matter, hoping to see how the atoms inside matter are arranged. [0003] The resolution of holographic imaging is limited by two factors. When the light source is a spherical wave, it is limited by the wavelength of the light source and the size of the light source; when the light source is a plane wave, it is limited by the wavelength of the light source and the resolution of the detector. In order to obtain higher holographic imagin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01N23/223
Inventor 高鸿奕陈建文朱化凤干慧菁李儒新徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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