OPTICS & PHOTONICS International Congress 2024

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HEDS2024 » Oral Presentation

Particle Acceleration 2

2024年4月25日(木) 10:25 〜 11:50 311+312 (Pacifico Yokohama Conference Center)

Session Chair: Sergei Bulanov (ELI-BL)

11:20 〜 11:35

[HEDS8-04] Density dependence of positron acceleration by longitudinal electric field in relativistic laser-plasma interaction

*Kaoru Sugimoto1 (1. Yuakawa Institute for Theoretical Physics, Kyoto University)

We performed 2D PIC simulation of interaction between an ultra-intense laser light and a near critical density plasma. It has been observed that e--e+ pair creation happened due to photon collisions. Some of the positrons are accelerated by a longitudinal electric field induced by a charge separation at the laser pulse front. The positrons are energized to near GeV level. We also confirmed that positron acceleration can be caused by initial target density 0.5-5.6nc.

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