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) Temporal evolution of the total number of (a) positrons and (b) BW-electrons. Ensemble-averaged energy evolution for (c) positrons and (d) BW-electrons. The counter-propagating laser pulses at three different intensities, I = 1 × 10²³ W/cm² (black pentagon), I = 4 × 10²³ W/cm² (red circle), and I = 8 × 10²³ W/cm² (blue diamond), are used to irradiate a 1-μm CH foil (n_e = 280n_c) from opposite sides.