Abstract

The laser optogalvanic (LOG) technique is an extremely versatile and sensitive detection/spectroscopic tool.Full exploitation of this technique requires a better understanding of the mechanisms involved in the generationof LOG signals. The temporal profile of a LOG signal consists, in general of two overlapping but distinctlygenerated components, one mediated by ionization rate changes and the other by acoustic effects. Thesecomponents, when resolved, can provide considerable information about various excited states and plasmaprocesses. Some sample results are presented for neon and iodine, and the use of energy level diagrams for the

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