FEASIBILITY OF GENERATION PICOSECOND AND SUBPICOSECOND X-RAY PULSES IN THIN-FILMS

The characteristics of a femtosecond laser plasma, formed by irradiati on of a thin freely suspended carbon film, are investigated numericall y. It is shown that the use of thin films can increase considerably th e electron temperature of a femtosecond laser plasma and make it possi ble to generate x rays of shorter wavelengths. This method can also be used to increase the efficiency of conversion of the energy of laser pulses into the radiation emitted by hydrogen-like carbon ions without a significant increase in the duration of x-ray pulses.