X-RAY-EMISSION IN THE WATER WINDOW FROM A NITROGEN GAS PUFF TARGET IRRADIATED WITH A NANOSECOND ND-GLASS LASER-PULSE

Measurements of X-ray emission in the wavelength range of 2-3 nm from a high-density nitrogen gas puff target irradiated with a nanosecond N d:glass laser pulse were performed with an absolutely calibrated refle ction grating spectrograph. The use of a gas puff target instead of a solid target eliminates the production of debris associated with solid targets, saving the high X-ray yield, compared to that obtained for s olid targets. The laser-produced X-ray source based on a high-density nitrogen gas puff target could be employed in X-ray microscopy.