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Abstract

Pulsed dye lasers were used to manipulate the excited state populations of magnesium atoms and ions, to examine the importance of charge exchange as an excitation and ionisation mechanism in an inductively coupled plasma (ICP). Laser enhanced ionisation of ground-state magnesium resulted in a decrease in emission from Mg II 4s(2)S and 3d(2)D levels, indicating that charge transfer is the predominant mechanism for the population of those levels. Double-resonant laser excitation of ground-state magnesium ions to the Mg II 4s(2)S level resulted in an increase in the emission from the Mg I 285.213 nm resonance line, demonstrating the importance of the reverse reaction.

Additional information

Authors: FARNSWORTH P B, Brigham Young University, Department of Chemistry, Provo, Utah (US);SMITH B W, University of Florida, Department of Chemistry, Gainesville (US);OMENETTO N, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 17th FACSS - Federation of Analytical Chemistry and Spectroscopy, Cleveland (US), Oct. 7-12, 1990
Availability: Available from (1) as Paper EN 35680 ORA
Record Number: 199111231 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en
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