Effects of target thickness on emission direction of hot electrons generated from subrelativistic intensity laser pulses interacting with foil targets
近相对论强度激光与薄膜靶相互作用中靶厚度对超热电子发射方向的影响

The effects of target thickness on emission directions of hot electrons are investigated in the interaction of subrelativistic intensity laser pulses with foil targets. The results show that the emission direction of the hot electrons at the rear side of the target shifts towards the target normal direction as the target thickness increases. It can be seen that the electrostatic field at the rear side of the target surface is the main cause affecting the emission direction of the hot electrons.