The Isotope Separation in the Spectra of Li I

Abstract

Three lines of the Li I spectrum were examined for possible isotope components. A faint component was found on the long wave-length side of the lines 6708A and 3232A. The measured separation of this component and the doublet is in good agreement with the calculated separation of the ${\mathrm{Li}}_6$ and ${\mathrm{Li}}_7$ lines. No components other than the regular doublet were observed for the line 6104A. This is in accord with the theory since the calculated separation for this line is below the limit of resolution of the apparatus used.