Detection of ozone in a MHz argon plasma bullet jet

S. Reuter (1, 2) , Joern Winter (1, 2) , S. Iseni (2, 1) , S. Peters (2) , A. Schmidt-Bleker (1, 2) , M. Dünnbier (1, 2) , J. Schäfer (2) , R. Foest (2) , K.-D. Weltmann (2)

1 The center for innovation competence (ZIK) plasmatis
2 INP - Leibniz Institute for Plasma Science and Technology

This study for the first time confirms the presence of plasma bullets in a MHz argon atmospheric pressure plasma jet. Bullet characteristics are investigated by phase-resolved optical emission measurements. Regarding the jet's reactive component output, its ozone production rates are investigated by two independent diagnostic techniques yielding complementary results. The first method - UV-absorption spectroscopy in the Hartley band - determines space-resolved distribution of the ozone concentration in the jet effluent. The second method - quantum cascade laser-absorption spectroscopy in the mid-infrared spectral region - yields high sensitivity results of the average ozone concentration in a multipass cell, in which the effluent is directed. The results of both diagnostic techniques show excellent agreement. © 2012 IOP Publishing Ltd.

Domaines: Physique des plasmas [physics.plasm-ph]; Plasmas; Optique / photonique; Milieux fluides et réactifs; Chimie-Physique [physics.chem-ph]; Ingénierie biomédicale

S. Reuter, Joern Winter, S. Iseni, S. Peters, A. Schmidt-Bleker, et al.. Detection of ozone in a MHz argon plasma bullet jet. Plasma Sources Science and Technology, 2012, 21 (3), ⟨10.1088/0963-0252/21/3/034015⟩. ⟨hal-02270228⟩