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Method and device for measuring short pulse ionizing radiation

A technology of ionizing radiation and short pulses, applied in the field of radiation monitoring, can solve the problems of high instantaneous dose rate and short duration

Inactive Publication Date: 2019-12-31
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the radiation field generated by ultra-short and ultra-intense laser devices has the characteristics of short duration and high instantaneous dose rate, the current measurement of ionizing radiation for this type of laser device is completed by passive measurement methods, and the existing active detection methods cannot To meet the requirements of high dose rate and fast response, it is necessary to design an ionizing radiation measurement method with fast response speed, high saturation threshold and certain ability to resist radiation damage

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  • Method and device for measuring short pulse ionizing radiation
  • Method and device for measuring short pulse ionizing radiation
  • Method and device for measuring short pulse ionizing radiation

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In order to solve the problem that the ionizing radiation cannot be measured in real time in the short pulse radiation field generated by the ultra-short and ultra-intensive laser device, the present invention provides a method for measuring ionizing radiation suitable for the short pulse radiation field, thereby reducing the operation risk and ensuring the safety of the operator. Healthy body. The short-pulse ionizing radiation measurement method and device according to the embodiments of the present invention will be des...

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Abstract

The present invention discloses a method and a device for measuring short pulse ionizing radiation. The method comprises the following steps: pulsed X-ray is controlled to irradiate a diamond detectorto generate electron hole pairs in order to generate electric current; the electric current is controlled to enter a pre-integrated circuit, and an electrical signal is pre-integrated and measured through a current measuring circuit; the measured electrical signal is collected and converted by a data acquisition circuit, and the ionizing radiation dose of a short pulse radiation field therein isobtained. By using the method, the ionizing radiation of the short pulse radiation field can be measured in real time, thereby operation risk is reduced and health of operators is ensured.

Description

technical field [0001] The invention relates to the technical field of radiation monitoring, in particular to a method and device for measuring short-pulse ionizing radiation. Background technique [0002] In recent years, hundreds of TW-level (10 14 W) or even PW level (10 15 W) There is an increasing number of large high-power laser installations that can generate intensities up to 10 21 W / cm 2 laser. When an ultra-short and ultra-intense laser is irradiated on a solid target, the atoms on the target surface will be stripped into a high-charge state to generate a high-temperature and high-density plasma, and then the laser energy will be absorbed in the plasma and used to accelerate Electrons can even produce relativistic superthermal electrons, and these superthermal electrons will further generate X-rays through ionization or bremsstrahlung, and some of the higher-energy X-rays will generate outward emission through photonuclear reactions and electron pair effects. ...

Claims

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Application Information

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IPC IPC(8): G01T1/02
CPCG01T1/02
Inventor 邱睿宫辉李君利魏朔阳张辉武祯李春艳
Owner TSINGHUA UNIV
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