Dense pair plasma generation by two laser pulses colliding in a cylinder channel
Liu Jian-Xun1, 2, Ma Yan-Yun1, 3, 4, †, Yu Tong-Pu1, 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) (a) The positron yield as a function of the laser intensity and (b) photon spectra at in simulations with different laser intensity ( ).