Dense pair plasma generation and its modulation dynamics in counter-propagating laser field<xref rid="cpb_27_10_105202fn1" ref-type="fn">*</xref><fn id="cpb_27_10_105202fn1"><label>*</label><p>Project supported by the National Basic Research Program of China (Grant No. 2013CBA01504), the National Natural Science Foundation of China (Grant Nos. 11347028, 11405083, and 11675075), the Natural Science Foundation of Hunan Province, China (Grant No. 2018JJ2315), and the Youth Talent Projectof Hunan Province, China (Grant No. 2018RS3096).</p></fn>

Dense pair plasma generation and its modulation dynamics in counter-propagating laser field**

Project supported by the National Basic Research Program of China (Grant No. 2013CBA01504), the National Natural Science Foundation of China (Grant Nos. 11347028, 11405083, and 11675075), the Natural Science Foundation of Hunan Province, China (Grant No. 2018JJ2315), and the Youth Talent Projectof Hunan Province, China (Grant No. 2018RS3096).

Liu Wei-Yuan^{1, 2}, Luo Wen^{1, †}, Yuan Tao^{2, 3}, Yu Ji-Ye^{2, 3}, Chen Min^{2, 3, ‡}

(color online) The spatial density distributions of positron (upper part) as well as electric fields E_y (lower part) at (a) t = 10T₀ and (b) t = 10.25T₀. Due to the axial symmetry of the distributions, only half of the spatial distributions for positrons and electric fields are plotted. The longitudinal distributions of positron density with consideration of radiation reaction (red) and without radiation reaction (grey) at (c) t = 10T₀ and (d) t = 10.25T₀. A laser intensity of 4 × 10²³ W/cm² and a foil density of n_e = 280n_c are used in the simulations.