Abstract
We demonstrate a neonlike argon-ion x-ray laser, using a short-pulse laser-irradiated gas puff target. The gas puff target was formed by pulsed injection of gas from a high-pressure solenoid valve through a nozzle in the form of a narrow slit and irradiated with a combination of long, 600-ps and short, 6-ps high-power laser pulses with a total of 10 J of energy in a traveling-wave excitation scheme. Lasing was observed on the transition at 46.9 nm and the transition at 45.1 nm. A gain of was measured on these transitions for targets up to 0.9 cm long.
© 2001 Optical Society of America
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