Electron heating by optical field ionization in the oxygen background gas

摘要

This paper studies the effect of parameters such as pulse length, wavelength and peak intensity of the laser pulse on the residual energy of optical-field-ionized oxygen plasma for generation the recombination x-ray laser. The residual electron energy is calculated via the classical model of above-threshold ionization. Also it is showed how the space charge effect can reduce the residual electron energy to a minimum value in a suitable condition.