Abstract
A new technique has been established to produce stable ultra-powerful relativistic channels in high-density plasmas optimized to significantly increase the brightness of the developed 4.5 keV Xe(L) x-ray source. The relativistic channel formation in plasmas with an appropriate gradient in the longitudinal electron density profile optimizes the stability of the self-channeling, the power compression, and the x-ray source brightness. It has been demonstrated that the power trapped in stable optimized relativistic channels in high-density plasmas driven by ~3 TW UV laser system exceeds 50 critical powers for relativistic and ponderomotive self-channeling.
© 2006 Optical Society of America
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