Abstract

The isotopic enrichment of copper ions in a positive column Cu–Ne discharge using optogalvanic excitation is analyzed with a rate equation model. With excitation at 510.6 nm, the fraction of the ions belonging to the 63-amu isotope of copper is enriched relative to the neutral abundance. Enrichment as large as 10% is calculated when the initial abundance of the neutral isotope is small (≤0.1) and the discharge current density is large (≥75 mA/cm²). The degree of enrichment is examined as a function of the initial abundance, discharge current, the rate of charge exchange, and the diameter of the discharge tube.

© 1983 Optical Society of America

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