激光技术
激光技術
격광기술
LASER TECHNOLOGY
2013年
5期
627-630
,共4页
非线性光学%激光等离子体%理论分析%相对论性朗缪尔湍动%孤子波包
非線性光學%激光等離子體%理論分析%相對論性朗繆爾湍動%孤子波包
비선성광학%격광등리자체%이론분석%상대론성랑무이단동%고자파포
nonlinear optics%laser plasmas%theories analysis%relativistically Langmuir turbulence%soliton wave-packet
为了研究相对论性朗缪尔孤子的特性,对从动力论出发所获得的超强等离子体中相对论性强朗缪尔湍动控制方程组进行了理论分析。结果表明,随着电子的平均洛伦兹因子以及场的湍动参量增加,朗缪尔孤子的波包半宽变窄,孤子总能量和总动量相应地增大,且电子的相对论效应对孤子总能量和动量的非线性部分的影响远大于线性部分。该研究可为超强激光等离子体中相关的非线性现象提供新的理论参考。
為瞭研究相對論性朗繆爾孤子的特性,對從動力論齣髮所穫得的超彊等離子體中相對論性彊朗繆爾湍動控製方程組進行瞭理論分析。結果錶明,隨著電子的平均洛倫玆因子以及場的湍動參量增加,朗繆爾孤子的波包半寬變窄,孤子總能量和總動量相應地增大,且電子的相對論效應對孤子總能量和動量的非線性部分的影響遠大于線性部分。該研究可為超彊激光等離子體中相關的非線性現象提供新的理論參攷。
위료연구상대론성랑무이고자적특성,대종동력론출발소획득적초강등리자체중상대론성강랑무이단동공제방정조진행료이론분석。결과표명,수착전자적평균락륜자인자이급장적단동삼량증가,랑무이고자적파포반관변착,고자총능량화총동량상응지증대,차전자적상대론효응대고자총능량화동량적비선성부분적영향원대우선성부분。해연구가위초강격광등리자체중상관적비선성현상제공신적이론삼고。
In order to study the characteristics of relativistic Langmuir solitons , the control equations of relativistic strong Langmuir turbulence in ultrapowerful laser plasma were obtained from momentum theory .And then, theoretical analysis was made .The research shows that half-width of wave-packet will become narrower and the total energy and momentum of solitons will become bigger with the increasing of average Lorentz factor of electrons and turbulence parameter of field.The relativistic effect of electrons affects the total energy and momentum of the solitons much larger in the nonlinear part than in the linear part .The results will provide the theoretical reference on the nonlinear phenomenon in ultrapowerful laser plasma.