Abstract
IT is easily shown on the theory of electrons that the amount of separation of the outer components of a transversal Zeeman triplet must be slightly different from that in a longitudinal doublet. Some time ago I showed that the transversal separation in weak magnetic fields does not strictly follow the linear relation with the magnetising force, but, owing to an indirect method of measurement, the exact amount of the separation could not be measured with accuracy. By measuring the longitudinal effect of helium lines with an echelon spectroscope of thirty-five plates, each of 1 cm. thickness, made by Hilger, I found that doublets can be distinctly separated in a field of 180 gauss, when the right- and left-handed circularly polarised light is linearly polarised in mutually perpendicular directions, by interposing Fresnel's rhomb in the course of the beam. Taking a number of points at intervals of about 300 gauss from H = 0 to H = 2000, and ten to thirteen points from. H = 2000 to H = 14,000, I found that for the three lines λλ = 6678, 5876, 5016, the relation between the amount of separation δλ and the strength of the field H is exactly linear, so that δλ/H = constant also in weak fields. In these experiments it was necessary to gauge the strength of the field accurately for each point before and after each micrometric measurement by means of a small coil. The values of e/m were found to be for The separation of the satellite of D3 is complex, but there is one component which gives the same value of e/m as D3.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
NAGAOKA, H. Difference between Longitudinal and Transversal Zeeman Effects in Helium Lines. Nature 81, 188 (1909). https://doi.org/10.1038/081188b0
Issue Date:
DOI: https://doi.org/10.1038/081188b0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.