Experimental Study Of X-ray Emission From Interaction Of Ultra-short And Ultra-intense Laser With Matter

Monoenergetic K-alpha x-ray, x-ray laser et al can emit from interaction of ultra-short and ultra-intense laser pulse with matter. For the advantage of small source size and short pulse duration et al, K-alpha x-ray emission, of which the energy can reach several or tens keV, can be applied widely in many fields. Such as, back lighting imaging in inertial confinement fusion, medical imaging, photoengraving, time-resolution x-ray diffraction and so on. What's more, the generation of K-alpha x-ray has direct relation to the hot electron. So the hot electron can be studied by K-alpha x-ray indirectly. X-ray has interesting application in life sciences, atomic structure and dynamics, laser-plasma, material sciences and chemistry and so on, for it's advantage of high-brightless, short-wavelenght and good coherence et al. In order to study K-alpha x-ray emission, x-ray laser emission from interaction of ultra-short and ultra-intense laser pulse with matter and prepare for future study and application. This thesis study: 1) K-alpha x-ray emission from ultra-short and ultra-intense laser pulse with copper planar target interaction. 2) Soft x-ray emitted by circularly polarized femtosecond-laser-pulse in low pressure xenon.Experement of K-alpha x-ray emission from ultra-short and ultra-intense laser pulse with copper planar target interaction: Using single-photon counting x-ray CCD, the yield of K-alpha x-ray was measured, which was emitted by interaction of 5.5×10¹⁷ ～1.96×10¹⁹W/cm² P-polarized ultra-short and ultra-intense laser pulse...