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Laser-Enhanced Ionization Detection in a Laser-Produced Plasma at Atmospheric Pressure: Theoretical and Experimental Considerations

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The essential data of matter-laser interaction which govern the creation of the plasma are described and are shown to permit the determination of several plasma parameters. The choice of an electrical detection adapted to a continuous plasma under atmospheric pressure allows the study by analogy of the transient laser-produced plasma (LPP). Experimental results confirm that laser-enhanced ionization detection in an LPP at atmospheric pressure is not feasible because ionization is "strong" and collection is "weak".

Keywords: Lasers, analytical spectroscopic; Resonant ionization; Spectroscopic techniques; Time-resolved spectroscopy; UV-visible spectroscopy

Document Type: Research Article


Affiliations: 1: Commissariat à l'Energie Atomique, Service d'Etudes, Analytiques, BP No. 6, 92265 Fontenay-Aux-Roses Cedex, France 2: C.N.R.S., Laboratoire Aimé Cotton, Université Paris Sud, 91405 Orsay, France

Publication date: May 1, 1989

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