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Optical Diagnostics of Laser Induced Breakdown in Argon at Atmospheric Pressure

By J. Plavčan, J. Jašík, P. Vojtek, Z. Zábudlá and P. Veis


Abstract. In the present work, argon plasma produced by a Nd:YAP laser (1078 nm, Passive Mode Locking) was investigated at atmospheric pressure. The electron temperature was determined by mean of Saha-Boltzmann method using Ar I and II lines. The electron density was calculated from Stark broadening of Ar I lines. The electron temperature is obtaining values in range 1.5- 1.16 eV showing slight decrease during 400 ns time after laser shot. The electron density decays from 4.2×10 16 cm-3 at the beginning to 2.8×10 17 cm-3 after 400 ns delay

Year: 2011
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