Abstract
On the basis of the observed asymmetry of 26 Ne I spectral line profiles (in the 3s–3p and 3p–4d transitions) we have obtained their ion broadening parameters ( A) caused by influence of ion microfield to the line broadening mechanism. They are the first A data obtained experimentally in the Ne I spectrum and 16 from them are the first data in this field. The linear, low-pressure, pulsed arc has been used as a plasma source operated in neon at 33 000 and 36 500 K electron temperatures and 6.7×10 22 and 8.8×10 22 m −3 electron densities. Our A values have been compared to the unique theoretical ones and very high disagreement was found among them. We have found stronger influence of the ion contribution to the Ne I line profiles than the semiclassical theoretical approximation provides.
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