Abstract:
By photographing the spectrum of arsenic by the method of the hollowcathode discharge in helium and in neon about 100 new lines have been recorded. In the light of the experimental data, the analysis of As I published by previous investigators has been considerably altered and extended. Several new levels have been added and the higher members of the chief groups of the ms series of terms have been identified. A mean value of 85,000 cm.-1 has been suggested for the deepest term 4p 4S2 which leads to a first ionization potential of approximately 10.5 V. for arsenic.
