On the Relative Intensities of Stokes and Anti-Stokes Lines in the Raman Spectrum,

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O n the Relative Intensities

of

Stokes and Anti-Stokes Lines in

h e

Raman Specttum,

(Receiued for pu blico tion, 14th July, ^1931.)

ratio of tbe intensities of the Raman Iines of f r e q o w e k (Y+v),, and (v-v,,) has h e n determined by the method ^a£

diaplacament of blackening-log intensity annee in tbe m~ of two linm due to carbon tatrachlorida b e i n g v,, equal to 1363 x 10'0 d 945x10'0 reepectively. It baa been found thrt themid ratio re ob-

erperirneatally, ia representea more wnlately by the qrmsioa

.

^e ^KT ^ae^given ^byP h e k ' e theory, thrn

bf

tba maun faotor alone.

Raman and Krishnanl showed that the relatire intend- ties of the lines of freqnanries v + V, and P-F, o h m ed in the scattered light with tbe incident freqnenq ^P,are

h..,

at least approximately given by the ratio h ' F where h, k and

T

are the Planok'a constant, Bolhmrurn mostant per molecule and the absolute temperature respeativelg . Omtein

- . ^.^J,^.,

and Rekveld suggested a modified formula

c-,.

t+> rn

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