
Close-coupling methods for electron impact broadening have been extended to the Stark broadening of neutral helium lines. The comparison with semiclassical impact theories reveals significant differences, particularly at low electron temperatures. Ion broadening is included by the use of the model microfield method. For the 23Po-43De and 21Po-41De transitions, comparison has been made with experimental measurements.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 13 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
