The Fulcher Bands of Hydrogen

Abstract

IN a communication just published (in the Proceedings of the Royal Society of Edinburgh) I have shown that the Fulcher bands of hydrogen can be arranged in three branches (P′, Q, and R′), the Q branches being identical with those of Richardson. The P′ and R′ branches have an initial level differing from that of the Q branch, while all three have a common final level, a fact proved conclusively by the intercombinations found to hold between them. This shows the final state to be an S state, as Birge has predicted.