Ultrabright 4.5 keV Xe(L) X-Ray Source from OptimizedStable Relativistic Channels

摘要

A new technique has been established to produce stable ultra-powerful relativistic channelsrnin high-density plasmas optimized to significantly increase the brightness of the developed 4.5 keVrnXe(L) x-ray source. The relativistic channel formation in plasmas with an appropriate gradient in thernlongitudinal electron density profile optimizes the stability of the self-channeling, the powerrncompression, and the x-ray source brightness. It has been demonstrated that the power trapped in stablernoptimized relativistic channels in high-density plasmas driven by～3 TW UV laser system exceeds 50rncritical powers for relativistic and ponderomotive self-channeling.