Absorption Spectra of the Samarium Ion in Solids. II. Conglomerate Absorption of SmCl3·6H2O and a Partial Energy Level Diagram of the Sm+++ Ion as It Exists in Crystalline SmCl3·6H2O

Abstract

Additional lines of the Sm${\mathrm{Cl}}_3$·6${\mathrm{H}}_2$O absorption spectrum obtained from conglomerates of crystal fragments are reported for four temperatures between 20° and 300°K. These new lines, along with ones previously reported for single-crystal absorption, are used to establish the existence of excited lower levels situated at 145, 160, 204, 217, and roughly 300 ${\mathrm{cm}}^{-1\mathrm{}}$ above the basic level. It is probable that there are other levels more than 400 ${\mathrm{cm}}^{-1\mathrm{}}$ above the basic one. Two components of the 300 level, at 295 and 315 ${\mathrm{cm}}^{-1\mathrm{}}$, are thought to be present, and there are indications that the other levels, particularly the basic one, may be complex.