Determining Density of H2O2 Using Absorption Spectroscopy in Plasma Jets

Biomedically relevant species can be utilized in custom compositions for medical, industrial or agricultural applications. Studying H2O2 densities with cavity ring-down spectroscopy enables a broader range of applications for plasma jets.


Researchers have developed and demonstrated a new diagnostic technique for obtaining local distribution of gas phase hydrogen peroxide (H2O2) in plasma jets. Continuous-wave cavity ringdown spectroscopy, with a quantum cascade laser at a wavelength of 8.12 μm, is used to determine the effective absorption length of a cold atmospheric pressure plasma jet and to determine the localized density of H2O2 in the effluent of the plasma jet.

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