Time resolved transient absorption probing of a laser plasma II
- 1. lab. Curien. CNRS UJM UdL; Saint-Etienne; France
Description
During the last two decades dense rare gases have attracted a great number of workers due to their potentiality as laser media. In this respect a detailed knowledge of plasma kinetics is of great importance. A recent study of kinetics and decay processes in argon has shown that the 4s atomic levels act as decay steps. The present communication reports on a method allowing the kinetic study of an argon plasma by transient visible absorption spectroscopy from the frrst 4s-level manifold. The plasma is created by focusing a pulsed YAG laser in argon at variable pressure, typically in the atmospheric range. The probe beam is obtained by irradiating with a second YAG laser a dye cell operated in the broad band regime 121. The light is analyzed with a 2.5-m Ebert spectrometer equipped with an EG&G optical multichannel analyzer (OMA).
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- https://cv.archives-ouvertes.fr/stephane-mottin (URL)
- 10.1051/jp4:19917148 (DOI)