Key points are not available for this paper at this time.
The theory of radiation due to free–free transitions by electrons in a plasma has been the subject of much work. Elwert has given an exact theory for binary electron-ion encounters but there has been doubt about the applicability of the formulae when an electron moves in the field of many ions at comparable distances; it is the aim of this paper to remove that doubt.
P. A. G. Scheuer (Tue,) studied this question.