Abstract
A capillary discharge soft X-ray laser operating at 46.9 rim on the transition 3p–3s (J=0−1) of the Ne-like Ar has been realized by exciting the active medium with a long half-cycle duration current pulse of 140 ns. The current is produced by discharging a 10 nF water dielectric capacitor, initially charged to voltages lower than 200 kV by a six stage Marx generator, through a 15-cm long capillary channels. The laser amplification has been obtained by properly adjusting all the other experimental parameters. Utilizing a 3-mm in diameter AI2O3 capillary channel initially filled with 0.3 torr of Ar pressure, a laser beam, which has a 4-mrad divergence and a time duration of 1.3 ns, is characterized by a gain of 0.6 ± 0.1 cm−1. The stability of the plasma compression followed by the laser emission is verified.
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Tomassetti, G., Ritucci, A., Reale, A. et al. Capillary discharge soft X-ray laslng in Ne-like Ar pumped by long current pulses. Eur. Phys. J. D. 19, 73–77 (2002). https://doi.org/10.1140/epjd/e20020057
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DOI: https://doi.org/10.1140/epjd/e20020057