Abstract
Interferometrically measured emission resonance line profiles are presented for commercial copper and calcium hollow cathode lamps, pulsed at frequencies from 10 to 300 Hz with pulses having a constant current-duration product. Pulses ranged from 7.8 mA at 1280 μs to 1000 mA at 10 μs. Time integrated profiles show that self-reversal increases with repetition frequency and that the lines broaden with increased current. Time resolved profiles show that self reversal developes during a pulse. A simple transport model is proposed to account for the observed blue shifts in the emission profile and in the self-reversal dip of the copper resonance line. The analytical significance of the results is briefly discussed.
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