Electron self-injection and acceleration in a hollow plasma channel driven by ultrashort intense laser pulses
Deng Suhui, Liu Mingping
       

The distributions of electrons at t=2.8 ps with density n e = 0.001 n c (a), n e = 0.002 n c (b), n e = 0.003 n c (c), and n e = 0.005 n c (d), respectively. The dashed lines show the boundaries of the hollow plasma channel.