井冈山大学学报(自然科学版)
井岡山大學學報(自然科學版)
정강산대학학보(자연과학판)
JOURNAL OF JINGGANGSHAN UNIVERSITY(SCIENCE AND TECHNOLOGY)
2013年
5期
13-18
,共6页
真空极化和磁化%正负电子对(e-p)等离子体%超强脉冲激光
真空極化和磁化%正負電子對(e-p)等離子體%超彊脈遲激光
진공겁화화자화%정부전자대(e-p)등리자체%초강맥충격광
vacuum polarization and magnetization%electron-positron plasma%ultra-intense laser pulse
通过推导并数值求解超强线极化脉冲激光在正负电子对(e-p)等离子体中传播时所满足的非线性Schr?dinger方程,讨论了超强线极化脉冲激光在e-p等离子体中的传播特性。结果表明,传播过程中真空极化和磁化产生的非线性效应与群速度色散之间的竞争能导致高斯型脉冲激光的自压缩,对长脉冲,这种竞争能使脉冲在压缩后又会产生分裂,最终导致类多孤子结构的形成。
通過推導併數值求解超彊線極化脈遲激光在正負電子對(e-p)等離子體中傳播時所滿足的非線性Schr?dinger方程,討論瞭超彊線極化脈遲激光在e-p等離子體中的傳播特性。結果錶明,傳播過程中真空極化和磁化產生的非線性效應與群速度色散之間的競爭能導緻高斯型脈遲激光的自壓縮,對長脈遲,這種競爭能使脈遲在壓縮後又會產生分裂,最終導緻類多孤子結構的形成。
통과추도병수치구해초강선겁화맥충격광재정부전자대(e-p)등리자체중전파시소만족적비선성Schr?dinger방정,토론료초강선겁화맥충격광재e-p등리자체중적전파특성。결과표명,전파과정중진공겁화화자화산생적비선성효응여군속도색산지간적경쟁능도치고사형맥충격광적자압축,대장맥충,저충경쟁능사맥충재압축후우회산생분렬,최종도치류다고자결구적형성。
The propagation characteristic of a linearly polarized ultra-intense laser pulse propagating in electron-positron plasmas are investigated by solving the modified nonlinear Schr?dinger equation numerically. The results show that the competition of the vacuum polarization and magnetization nonlinearity and group velocity dispersion can result in the compression of an initially Gaussian laser pulse. For long pulse, the competition can split the pulse, and lead to the formation of a relatively stable multi-solitons-like structure.