论文标题
从几个周期飞秒激光脉冲中产生attsond Electron束和X射线脉冲
Generation of attosecond electron bunches and X-ray pulses from few-cycle femtosecond laser pulses
论文作者
论文摘要
激光 - 血质电子加速器可用于产生高强度的X射线，因为由于Betatron振荡而在Wakefields中加速了电子。次秒电子束会产生相同持续时间的Betatron来源，这又可以在超短时尺度上进行探测。在本文中，我们通过粒子中的模拟表明，可以使用自注射中的低能量，超短的激光束和低血浆密度下的受控注射机制获得Attosecond电子束。但是，只有在受控状态下，电子注入才会导致稳定的，孤立的attosecond电子束。这种超短电子束显示会发出高光彩的X射线爆发
Laser-plasma electron accelerators can be used to produce high-intensity X-rays, as electrons accelerated in wakefields emit radiation due to betatron oscillations.Such X-ray sources inherit the features of the electron beam; sub-femtosecond electron bunches produce betatron sources of the same duration, which in turn allow probing matter on ultrashort time scales. In this paper we show, via Particle-in-Cell simulations, that attosecond electron bunches can be obtained using low-energy, ultra-short laser beams both in the self-injection and the controlled injection regimes at low plasma densities. However, only in the controlled regime does the electron injection lead to a stable, isolated attosecond electron bunch. Such ultrashort electron bunches are shown to emit attosecond X-ray bursts with high brilliance
