Projection-type soft-X-ray band pass imaging system

An imaging system, transmission technology, applied in the field of X-ray imaging, to achieve the effect of solving the complex system and reducing the difference

Inactive Publication Date: 2014-03-12
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome a series of problems caused by the existing planar mirror type soft X-ray bandpass imaging method, the present invention proposes a transmission type soft X-ray bandpass imaging system

Method used

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  • Projection-type soft-X-ray band pass imaging system
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  • Projection-type soft-X-ray band pass imaging system

Examples

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Embodiment 1

[0038] Example 1 Transmissive soft X-ray bandpass imaging system applied to measurement of laser strike point spot of radiation source

[0039] The transmission soft X-ray bandpass imaging system of this embodiment is applied to the measurement of the black cavity radiation source laser strike point spot, and the schematic diagram of the optical path is as figure 2 As shown, it includes: radiation source 1, imaging pinhole 2, filter 3, microchannel plate 6 and X-ray CCD 5.

[0040] The imaging pinhole 2 is located on the central line between the radiation source 1 and the X-ray CCD 5. The filter 3 and the microchannel plate 6 are located between the imaging pinhole 2 and the X-ray CCD 5, and the microchannel plate 6 is close to the X-ray CCD 5 surface. The filter 3 is a V filter; the imaging pinhole 2 has a diameter of 10um and is made in the center of a 20um thick tantalum plate.

[0041] In this embodiment, the X-ray emitted by the radiation source 1 passes through the imaging ...

Embodiment 2

[0043] Example 2 Four-channel transmission soft X-ray bandpass imaging system

[0044] The four-channel transmissive soft X-ray bandpass imaging system of this embodiment has a position arrangement similar to that of embodiment 1, and the schematic diagram of the optical path is as Figure 4 As shown, it includes: radiation source 1, 2*2 imaging pinhole array 7, 2*2 filter array 8, microchannel plate 6 and X-ray CCD 5. The radiation source 1 passes through the 2*2 imaging pinhole array 7 to obtain 4 images, and passes through the 2*2 filter array 8 and the microchannel plate 6 to image on the X-ray CCD 5.

[0045] In this embodiment, the filters used in the 2*2 filter array 7 are C, Ti, Fe, and Cu respectively, and each channel is configured with different filters to obtain measurement signal images of different energy bands. The bandpass curve obtained by the cooperation of each filter and the microchannel plate is as follows Figure 5 Shown. It can be seen that the four-chann...

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Abstract

The invention provides a projection-type soft-X-ray band pass imaging system for soft-X-ray (0.1keV-1.5keV) band pass imaging with high spatial discrimination. Imaging devices of the projection-type soft-X-ray band pass imaging system include an imaging pinhole, a filter, a micro-channel plate and an X-ray sensor. After X-ray generated by a light source passes through the imaging pinhole, a spatial distribution image of a broadband spectrum of the light source is acquired then passes through the filter and the micro-channel plate sequentially to emit into the X-ray sensor, so that images are acquired. As the micro-channel plate has the projection-type high-energy cut-off characteristic and the filter is of an absorption edge structure at the X-ray energy section, band pass imaging of the X-ray energy section can be realized.

Description

technical field [0001] The invention relates to the fields of X-ray imaging and X-ray spectrum diagnosis, in particular to a transmission type soft X-ray band-pass imaging system. Background technique [0002] In the research of inertial confinement fusion, through the measurement of signal images in the soft X-ray energy range (0.1keV~1.5keV), a series of experiments such as radiation sources, laser focal spots, and thermal wave ablation trajectories can be carried out. For black cavity physics , implosion physics, transport physics and other physical research is of great significance. With the deepening of physical research, wide-spectrum signal image measurement can no longer meet the requirements of physical analysis, and imaging technology with spectral resolution has become particularly important. [0003] Generally, imaging techniques with spectral resolution include: soft X-ray high-pass imaging technology using filters, soft X-ray low-pass imaging technology using...

Claims

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Application Information

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IPC IPC(8): G03B42/02
Inventor 曹柱荣邓博
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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