Enhancing X-ray generation by electron-beam-laser interaction in an optical bragg structure

Area of Science:

• Plasma physics
• High-energy physics
• Photonics

Background:

• Relativistic electrons interacting with laser pulses are a key mechanism for generating high-energy radiation.
• Conventional methods often use free-space Gaussian beams, limiting energy output.
• Bragg structures offer potential for enhanced laser-plasma interactions.

Purpose of the Study:

• To investigate the potential of Bragg structures in enhancing X-ray radiation production.
• To compare the energy output of X-ray generation using Bragg-guided laser pulses versus conventional Gaussian beams.
• To quantify the enhancement factor achieved with the Bragg structure configuration.

Main Methods:

• Generating X-ray radiation by scattering relativistic electrons off a counter-propagating laser pulse.
• Guiding the laser pulse using an adequate Bragg structure.
• Comparing the generated X-ray energy with a conventional free-space Gaussian-beam configuration.
• Maintaining identical electron beam and injected laser power for both configurations.

Main Results:

• X-ray radiation energy generated with Bragg-guided laser pulses surpassed conventional methods by approximately two orders of magnitude.
• The Bragg structure significantly improved the efficiency of energy transfer from the laser to the X-ray radiation.
• The observed enhancement is substantial, indicating a major advancement in X-ray generation techniques.

Conclusions:

• Bragg structures are highly effective in enhancing X-ray radiation generation from laser-electron interactions.
• This method offers a significant improvement over conventional free-space Gaussian-beam configurations.
• The findings pave the way for more powerful and efficient X-ray sources.