In the experiment of generating laser plasma in a line-focus system we found that the x-ray emission nonuniformity was increased rapidly after the pumping laser has been turned off.Our study indicates that radiative c...In the experiment of generating laser plasma in a line-focus system we found that the x-ray emission nonuniformity was increased rapidly after the pumping laser has been turned off.Our study indicates that radiative cooling instability is one possible reason for this x-ray emission nonuniformity.展开更多
The self-generated magnetic field induced by an ultraintense short laser pulse propagating in a uniform underdense plasma is investigated. The magnetic fields are strong and associated with the plasma wave wake field....The self-generated magnetic field induced by an ultraintense short laser pulse propagating in a uniform underdense plasma is investigated. The magnetic fields are strong and associated with the plasma wave wake field. Some properties of dc magnetic field in two extreme laser pulse regime are described.展开更多
A series of coupling equations for the relativistic coherent harmonic generation is derived taking account of the coupling effect among the harmonic contents and plasmas wave.Using these equations,the growth and satuT...A series of coupling equations for the relativistic coherent harmonic generation is derived taking account of the coupling effect among the harmonic contents and plasmas wave.Using these equations,the growth and satuTaiion of amplitude of the third harmonic wave is investigated.Results show that the coupling effect induces the saturation of harmonics,which is identical with ones of the Lagrangian description.展开更多
文摘In the experiment of generating laser plasma in a line-focus system we found that the x-ray emission nonuniformity was increased rapidly after the pumping laser has been turned off.Our study indicates that radiative cooling instability is one possible reason for this x-ray emission nonuniformity.
基金the National Natural Science Foundation of China.
文摘The self-generated magnetic field induced by an ultraintense short laser pulse propagating in a uniform underdense plasma is investigated. The magnetic fields are strong and associated with the plasma wave wake field. Some properties of dc magnetic field in two extreme laser pulse regime are described.
基金Supported by the National Natural Science Foundation of China。
文摘A series of coupling equations for the relativistic coherent harmonic generation is derived taking account of the coupling effect among the harmonic contents and plasmas wave.Using these equations,the growth and satuTaiion of amplitude of the third harmonic wave is investigated.Results show that the coupling effect induces the saturation of harmonics,which is identical with ones of the Lagrangian description.
