Raman effect and temperature I—Ammonium chloride, bromide, iodide

Abstract

This work was begun by one of us at University College, Leicester, three years ago (when preliminary results were obtained for solid nitrogen peroxide at about -80° C using CO 2 snow from gas-cylinders) but owing to the great difficulty in obtaining refrigerants there, had to be abandoned, and the work was recommenced at Southampton last year. In the meantime, Sutherland using improved apparatus of a similar type, has investigated the same substance, and finds a richer spectrum at -190° C, then we found at -80° C. In addition he gives the results of observations on ozone, ice, methane, ammonia, and carbon tetra-chloride.