Open AccessThe λ 3400 band of phosphorus hydride
Author(s) -
R. W. B. Pearse
Publication year - 1930
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1930.0160
Subject(s) - phosphorus , spectral line , hydride , dispersion (optics) , tube (container) , chemistry , hydrogen , materials science , atomic physics , analytical chemistry (journal) , optics , physics , environmental chemistry , metallurgy , composite material , organic chemistry , astronomy
In the account of the band spectra associated with phosphorus* given in Kayer’s “Handbuch der Spectroscopie,” mention is made of a band lying between λ 3479 and λ 3379 which was obtained by Geuter from a discharge tube containing phosphorus and hydrogen. Reference to the original paper showed that Geuter besides recording the results of an extensive investigation of the spectra produced under various conditions with phosphorus in the flame, in the arc, and in the discharge tube, had also made measurements on this band. The wave-lengths obtained, however, were only considered to be accurate to 0·03 A. and were quite inadequate for a detailed analysis of the fine structure of the band. It was desirable, therefore, to re-photograph the band under higher dispersion, especially as the experimental data for triplet molecular states are somewhat scanty.