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Laser-driven three-stage heavy-ion acceleration from relativistic laser-plasma interaction
1State Key Laboratory of Nuclear Physics and Technology, and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871, China and Helmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, Germany.
Summary
A novel three-stage heavy ion acceleration scheme uses lasers and a two-layer target to generate high-energy, quasimonoenergetic heavy ion beams. This method achieves efficient acceleration without screening effects, producing focused ion beams.
Area of Science:
- Plasma Physics
- Laser-driven Ion Acceleration
- High-Energy Particle Beams
Background:
- Generating high-energy quasimonoenergetic heavy ion beams is crucial for various applications.
- Existing acceleration schemes face challenges like screening effects and energy spread.
Purpose of the Study:
- To investigate a three-stage heavy ion acceleration scheme for producing high-energy quasimonoenergetic heavy ion beams.
- To explore the interaction of intense laser pulses with a compound two-layer target for optimized ion acceleration.
Main Methods:
- Utilizing two-dimensional particle-in-cell (PIC) simulations.
- Employing analytical modeling to understand the acceleration process.
- Investigating the interaction of intense linearly polarized laser pulses with a two-layer target (heavy ion front layer, light ion second layer).
Main Results:
- Heavy ions are pre-accelerated in the front layer and injected into a light ion shock wave for third-stage acceleration.
- Injected heavy ions are not affected by light ion screening, leading to isolated beams.
- Simulations demonstrate the potential to obtain ~100 MeV/u quasimonoenergetic Fe24+ beams using laser intensities of 1.1×10^21 W/cm².
Conclusions:
- The proposed three-stage scheme effectively generates high-energy quasimonoenergetic heavy ion beams.
- The compound target design and laser-target interaction are key to overcoming screening effects and achieving low energy spread.
- This method offers a promising pathway for advanced heavy ion beam generation.
