Efficient laser-plasma line X-ray source was developed. X-ray generation was optimized by the laser pulse duration alteration and using the local helium blowing into the microplasma region on a copper target located in atmospheric conditions. Measured Кα x-ray flux of 2 •10^7 ph/pulse/2π sr and conversion efficiency of 10^-5 were achieved correspondingly.

We both theoretically (using molecular dynamics) and experientially study of the nonlinear optical properties of supercritical CO 2 and Xe. We show the role of clustering on the nonlinear refractive index and Raman spectrum.

Предложена модель кластеризованной бинарной среды, описывающая аномальное поведение линейных (функция Лоренца-Лоренца) и нелинейных (нелинейный показатель преломления) оптических свойств сверхкритического CO. С помощью компьютерного моделирования молекулярной динамики CO, верифицирована справедливость данной модели, описывающей аномальное поведение нелинейного показателя преломления сверхкритического CO в окрестности линии Видома, обусловленное кластеризацией A model of clustered binary medium is proposed. It describes the anomalous behavior of the linear (Lorentz-Lorentz function) and the nonlinear (nonlinear refractive index) optical properties of supercritical CO. Using computer simulation based on the molecular dynamics, we verified the validity of this model, that describes the anomalous behavior of the nonlinear refractive index of supercritical CO in the vicinity of the Widom line, due to clustering.