Abstract

A series of hollow-cathode tubes has evolved from the original Schüler type, for use at low temperature with valuable small samples (~10 mg). In the final tube assembly the light emerges with a divergence of f:3 through a 35-mm window. The cathode, of Al or Mg (or possibly Be) is clamp-sealed to the tube to be easily removable, yet in direct contact with liquid air. The tube has been used with a static rare gas supply as well as a conventional circulating system. Several quickly interchangeable sources have been used to make relative measurements of isotope shift with an uncertainty of about 2 middot; 10⁻⁸.

© 1950 Optical Society of America

Spectroscopic Studies of Ionization in a Hollow-Cathode Discharge

Kenneth B. Mitchell
J. Opt. Soc. Am. 51(8) 846-853 (1961)

A Study of the Short Duration, High Intensity, Electric Arc as a Source of Visible Light

G. D. Hoyt and W. W. McCormick
J. Opt. Soc. Am. 40(10) 658-663 (1950)

A 72-Inch High Vacuum Evaporator and Its Glow Discharge Equipment

Nels C. Benson, Georg Hass, and Noel W. Scott
J. Opt. Soc. Am. 40(10) 687-690 (1950)

Apparatus for Low Temperature Study of the Raman Effect*

R. C. Lord and E. Nielsen
J. Opt. Soc. Am. 40(10) 655-657 (1950)

The Use of Briquetted Samples in the Spectrochemical Analysis of Carbon and Alloy Steels and Other Metals

J. F. Woodruff
J. Opt. Soc. Am. 40(4) 192-196 (1950)