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 Nd:glass laser pulse were performed with an absolutely calibrated reflection 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 solid targets. The laser-produced X-ray source based on a high-density nitrogen gas puff target could be employed in X-ray microscopy.