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Abstract
Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology limitations. Here, we investigate how to optimize their coupling with solid targets. Experimentally, we show that overlapping two intense lasers in a mirror-like configuration onto a solid with a large preplasma can greatly improve the generation of hot electrons at the target front and ion acceleration at the target backside. The underlying mechanisms are analyzed through multidimensional particle-in-cell simulations, revealing that the self-induced magnetic fields driven by the two laser beams at the target front are susceptible to reconnection, which is one possible mechanism to boost electron energization. In addition, the resistive magnetic field generated during the transport of the hot electrons in the target bulk tends to improve their collimation. Our simulations also indicate that such effects can be further enhanced by overlapping more than two laser beams.
Original language | English |
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Article number | 047202 |
Number of pages | 13 |
Journal | Matter and Radiation at Extremes |
Volume | 9 |
Issue number | 4 |
Early online date | 17 Apr 2024 |
DOIs | |
Publication status | Published - 1 Jul 2024 |
Keywords
- particle acceleration
- particle-in-cell method
- magnetic reconnection
- laser coupling
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Dive into the research topics of 'Optimizing laser coupling, matter heating, and particle acceleration from solids using multiplexed ultraintense lasers'. Together they form a unique fingerprint.Projects
- 1 Finished
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Advanced laser-ion acceleration strategies towards next generation healthcare
McKenna, P. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
21/05/13 → 20/05/19
Project: Research