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- W1990777909 abstract "The initial stage in development of hybrid plasma jet generator of singlet oxygen O<sub>2</sub>(<sup>1</sup>Δ) for a discharge oxygen-iodine laser (DOIL) is presented. This novel type of generator is based on a fast mixing of hybrid argon plasma jet of DC electric arc and RF discharge with a neutral molecular oxygen stream. Arc plasma jets have a much higher density of electrons than RF plasma jets to compensate the electro-negativity of oxygen and they can be operated at a higher pressure for an efficient supersonic expansion cooling in DOIL. An RF discharge is applied to the DC arc plasma jet at the hollow anode of the plasmatron to switch it from a hot-spot mode to a diffusive mode. That is advantageous with the use of aluminum anode, which has a lower melting point and a significantly lower rate of O<sub>2</sub>(<sup>1</sup>Δ) quenching compared to a standard copper anode in a gas plasmatron. An enhanced non-equilibrium in the plasma jet caused by the RF discharge and neutral oxygen injection is desirable for an efficient O<sub>2</sub>(<sup>1</sup>Δ) generation. Preliminary calculations on the equilibrium composition of O<sub>2</sub>-Ar mixture suggest keeping the arc temperature well down to prevent an excessive dissociation of the molecular oxygen." @default.
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- W1990777909 date "2008-10-03" @default.
- W1990777909 modified "2023-10-18" @default.
- W1990777909 title "Initial development of hybrid plasma jet generator of O 2 (1Δ) for DOIL" @default.
- W1990777909 doi "https://doi.org/10.1117/12.816695" @default.
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