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 3p S013s P11 transition at 46.9  nm and the 3d P113p P11 transition at 45.1  nm. A gain of 11 cm-1 was measured on these transitions for targets up to 0.9  cm long.

© 2001 Optical Society of America

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