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Reports on measurements of the shift and width of emission profiles of neutral argon lines (3p 5 4p-3p 5 4s transitions) produced in a high-pressure plasma (pressure range 1-2.5 atm) sustained by surface microwave propagation (Surfatron). Broadening and shifts were measured at different gas temperatures (1900-2600 K). The results are compared with theoretical calculations involving the long-range part of the interaction potential (van der Waals and resonant) and with the Lennard-Jones potential. Particular attention is given to the influence of the gas temperature.
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Moussounda et al. (1987) studied this question.
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