All-optical laser plasma accelerator-based Gamma ray source

A technology of laser plasma and gamma ray source, applied in radioactive sources, nuclear engineering and other directions, can solve the problems of large volume, high cost of electron accelerator, limited application scope of gamma ray source, etc., and achieves good performance, easy operation and low cost. Effect

Inactive Publication Date: 2014-04-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional electron accelerators are expensive and bulky, which limits the scope of application of this gamma-ray source

Method used

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  • All-optical laser plasma accelerator-based Gamma ray source
  • All-optical laser plasma accelerator-based Gamma ray source
  • All-optical laser plasma accelerator-based Gamma ray source

Examples

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Embodiment Construction

[0043] Overview of gamma ray sources according to embodiments of the present invention

[0044] figure 1 It is a schematic diagram of a gamma-ray source according to an embodiment of the present invention. Such as figure 1 As shown, the gamma-ray source device includes a high-power laser system 200 for generating two synchronized high-energy laser pulses 13 and 14, which are compressed through the compression cavity 15 and enter the laser plasma installed in the reaction cavity 36 The volume accelerator 18 and the scattered light focusing mirror 27 will be described in further detail below.

[0045] Because the gamma-ray source device of the present invention adopts an optimized structure, its size can be greatly reduced compared with the prior art, so it can be used for basic, medical and industrial applications and research in laboratories with limited space. For example, the gamma-ray source device capable of generating gamma rays with an energy of 1 to 20 MeV according to the ...

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Abstract

The invention provides an all-optical laser plasma accelerator-based small-sized Gamma ray source. The ray source comprises a synchronous dual-output high-power laser system (200), a double-compression-delay system (12), a laser plasma accelerator (18), a particle beam focusing system (24), a scattered light focusing mirror (27) and a particle beam separation system. A bunch of initial laser pulse is separated and amplified through the laser system (200) to generate two bunches of synchronous high-energy laser pulses (10 and 11); the two amplified laser pulses are compressed in a time domain through the double-compression-delay system (12), and proper delay is performed to form a drive pulse (13)-scattering pulse (14) pair; a drive pulse (13) passes through the laser plasma accelerator (18) to generate a relativistic electron beam (21); the particle beam focusing system (24) is used for transmitting the electron beam (21); the scattered light focusing mirror (27) is used for focusing a scattering pulse (14) to the electron beam (21) so as to generate a gamma ray 31); the separation system is used for separating the electron beam (21) from the gamma ray (31).

Description

Technical field [0001] The invention relates to a new type of γ-ray source realization method. The invention also relates to the application of this gamma-ray source in nuclear physics research, nuclear astrophysics research, nuclear material or radioactive waste detection, nuclear batteries, gamma-ray lasers, and new manufacturing methods for medical isotopes. Background technique [0002] At present, people mainly produce gamma rays in the following ways. [0003] Radioisotope gamma-ray source: The natural gamma-ray source on the earth comes from the decay process of radioisotope, such as 40 K (emission of 1.46MeV gamma rays by capturing electrons) and 60 Co (gamma rays of 1.17 and 1.33 MeV are emitted through beta decay). These gamma-ray sources are widely used in medical treatment (such as gamma knife surgery), non-contact industrial detection, and container security inspection facilities. However, due to the limitation of the types of radioisotopes, the energy and intensity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21G4/04G21G4/06
Inventor 中岛一久陈民曾明陈黎明盛政明
Owner SHANGHAI JIAO TONG UNIV
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