Luminosity of a flame containing sodium vapor and Scattering of x-rays in a magnetic field
Bonner, Tom Wilkerson (1910-1961)
Master of Arts
This paper contains an account of measurements of the variation of the luminosity of a sodium flame with the thickness of the flame and the corlcentration of the sodium salt solution sprayed into it. The reversal of the sodium lines by the layer of cool vapor at the front of the flame was eliminated by having no sodium in the front 3 cms of the flame. An improved form of sprayer was used in which the level of the solution and its concentration remained constant. It was found that the luminosity is a function of the product of the thickness of the flame and the concentration of the sodium in it or of the mass Mof sodium per square cm. This result agrees with the previous results of Gouy, H. A. Wilson and Locher but not with the recent results of C. D. Child. The function of M is proportional to Mwhen M is very small but increases less rapidly than M when M is large. Measurements of the variation of the luminosity with the thickness at the center of one of the D lines and at its edge showed that the absorption at the center is much greater than at the edge as was to be expected.