The radiation reaction effects on electron dynamics in counter-propagating circularly polarized laser beams are investigated through the linearization theorem and the results are in great agreement with numeric soluti...The radiation reaction effects on electron dynamics in counter-propagating circularly polarized laser beams are investigated through the linearization theorem and the results are in great agreement with numeric solutions.For the first time,the properties of fixed points in electron phase-space were analyzed with linear stability theory,showing that center nodes will become attractors if the classical radiation reaction is considered.Electron dynamics are significantly affected by the properties of the fixed points and the electron phase-space densities are found to be increasing exponentially near the attractors.The density growth rates are derived theoretically and further verified by particle-in-cell sim-ulations,which can be detected in experiments to explore the effects of radiation reaction qualitatively.The attractor can also facilitate realizing a series of nanometer-scaled flying electron slices via adjusting the colliding laser frequencies.展开更多
When the spins of deuteron and triton are aligned in parallel,the fusion cross-section increases by approximately 50%.The emitted neutrons are anisotropic and polarized in specific directions.The polarized neutron bea...When the spins of deuteron and triton are aligned in parallel,the fusion cross-section increases by approximately 50%.The emitted neutrons are anisotropic and polarized in specific directions.The polarized neutron beams can be used to measure strong magnetic fields in high-energy-density plasmas,offering a potential alternative to the well-established proton imaging technique.In contrast to protons,neutrons are not deflected by electromagnetic fields and are not sensitive to electric fields,thus reducing the complexity of magnetic field reconstruction.Threedimensional spin transport hydrodynamics simulations are employed to investigate the polarized neutron beams generated from spin-polarized deuterium-tritium target implosions.Synthetic polarized neutron images of magnetic fields are generated from Monte Carlo simulations.Based on a comparison of the results of finite-size sources and an ideal point source,a method to compensate the finite-source-size blurring effect is proposed to reduce the error in magnetic field reconstruction.展开更多
基金The work has been supported by the National Basic Research Program of China(Grant No.2013CBA01502),NSFC(Grant No.11535001)National Grand Instrument Project(2012YQ030142).
文摘The radiation reaction effects on electron dynamics in counter-propagating circularly polarized laser beams are investigated through the linearization theorem and the results are in great agreement with numeric solutions.For the first time,the properties of fixed points in electron phase-space were analyzed with linear stability theory,showing that center nodes will become attractors if the classical radiation reaction is considered.Electron dynamics are significantly affected by the properties of the fixed points and the electron phase-space densities are found to be increasing exponentially near the attractors.The density growth rates are derived theoretically and further verified by particle-in-cell sim-ulations,which can be detected in experiments to explore the effects of radiation reaction qualitatively.The attractor can also facilitate realizing a series of nanometer-scaled flying electron slices via adjusting the colliding laser frequencies.
基金the National Natural Science Foundation of China(12105193)Sichuan Science and Technology Program(2025ZNSFSC0827)。
文摘When the spins of deuteron and triton are aligned in parallel,the fusion cross-section increases by approximately 50%.The emitted neutrons are anisotropic and polarized in specific directions.The polarized neutron beams can be used to measure strong magnetic fields in high-energy-density plasmas,offering a potential alternative to the well-established proton imaging technique.In contrast to protons,neutrons are not deflected by electromagnetic fields and are not sensitive to electric fields,thus reducing the complexity of magnetic field reconstruction.Threedimensional spin transport hydrodynamics simulations are employed to investigate the polarized neutron beams generated from spin-polarized deuterium-tritium target implosions.Synthetic polarized neutron images of magnetic fields are generated from Monte Carlo simulations.Based on a comparison of the results of finite-size sources and an ideal point source,a method to compensate the finite-source-size blurring effect is proposed to reduce the error in magnetic field reconstruction.
