Nuclear Techniques ›› 2020, Vol. 43 ›› Issue (7): 70201-070201.doi: 10.11889/j.0253-3219.2020.hjs.43.070201

• ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS • Previous Articles     Next Articles

Proposal for X-ray vortices production based on nonlinear laser Compton scattering

Heping GENG1,2,Hailong WU3(),Jianhui CHEN3,Zhentang ZHAO3   

  1. 1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
    3.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • Received:2020-03-09 Revised:2020-04-13 Online:2020-07-15 Published:2020-07-16
  • Contact: Hailong WU E-mail:wuhailong@zjlab.org.cn
  • About author:GENG Heping, female, born in 1990, graduated from University of Science and Technology of China in 2013, doctoral student, major in optics, focusing on accelerator physics and technology
  • Supported by:
    National Key R&D Program of China(2016YFA0401900)

Abstract: Background

An optical vortex is an electromagnetic wave with a phase that varies azimuthally along the direction of propagation. The generation and application research of X-ray vortices are becoming more and more popular in recent years.

Purpose

This study aims to propose a generation scheme of a compact and inexpensive X-ray vortices source based on nonlinear laser Compton scattering (LCS).

Methods

Laser Compton scattering (LCS) was caused by high power circularly polarized light and relativistic electron beam. This LCS provided a practical method for generating tunable, near-monochromatic, well-collimated X-rays in a compact, relatively inexpensive source.

Results

Photons with energy of 1 keV is produced by head on nonlinear LCS interaction of 6.5 MeV electron beam and 800 nm Ti: Sapphire laser beam.

Conclusions

Compared with synchrotron, X-ray vortices source based on nonlinear LCS is a compact and inexpensive source. It provides a practical method for the laboratory to research the generation and application of X-ray vortices.

Key words: Laser Compton scattering, X-ray vortices, Orbital angular momentum