Dense pair plasma generation by two laser pulses colliding in a cylinder channel

Liu Jian-Xun^{1, 2}, Ma Yan-Yun^{1, 3, 4, †}, Yu Tong-Pu^{1, 3, ‡}, Zhao Jun¹, Yang Xiao-Hu¹, Zou De-Bin¹, Zhang Guo-Bo¹, Zhao Yuan¹, Yang Jing-Kang¹, Li Han-Zhen¹, Zhuo Hong-Bin¹, Shao Fu-Qiu¹, Kawata Shigeo⁵

(color online) The electron energy density distribution at in simulations with channel radiuses of (a) and (c). (b) The laser field at as a function of the cylinder radius. (d) The positron yield at as a function of the channel radius.