阿秒
正电子
物理
电子
伽马射线
原子物理学
激光器
核物理学
光学
超短脉冲
作者
Prokopis Hadjisolomou,Tae Moon Jeong,Petr Valenta,Alexander J. MacLeod,Rashid Shaisultanov,C. P. Ridgers,Sergei V. Bulanov
出处
期刊:Cornell University - arXiv
日期:2024-04-02
标识
DOI:10.48550/arxiv.2404.01865
摘要
Beams of photons and charged particles of high energy and high brightness find application across a range of disciplines in both fundamental and applied sciences. The interaction of an ultra-intense laser with matter has been shown to be an efficient source of high-energy particles, but typical schemes generate spatially broad distributions with high-divergence and low-brightness. In this paper we report on emission of highly collimated, ultrabright, attosecond $\gamma$-photons and generation of dense electron-positron pairs via a tunable particle generation scheme which utilises the interaction of two high-power lasers with metallic micro-wire target. Irradiating the target with a radially polarised laser pulse first produces a series of high charge, short duration, electron bunches with low transverse momentum. These electron bunches subsequently collide with a counter-propagating high intensity laser. Depending on the intensity of the counter-propagating laser, the scheme can be used to generate either highly collimated ultra-bright MeV-GeV $\gamma$-beams or electron-positron bunches with densities approaching the solid density level.
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