• The influence of optical activity on light scattering in crystals - Part II. Sodium chlorate

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      https://www.ias.ac.in/article/fulltext/seca/032/06/0374-0378

    • Keywords

       

      Selection Rule; Optical Activity; Raman Line; Symmetry Class; Electric Vector

    • Abstract

       

      As in the case of quartz (Chandrasekharan, 1948), using the property of optical activity, the selection rules for Raman lines of sodium chlorate have been experimentally verified using λ 2537 excitation for two different orientations of the crystal. Its 15 Raman lines have been classified as follows into the various symmetry classes possible for a cubic crystal:— 70 (E), 83 (F), 103 (F), 123 (F), 131 (A), 179 (E), 482 (E), 487 (F), 627 (A+F), 933 (F), 936 (A), 959 (E), 966 (F), 984 (F), 1026 (−). The results agree with earlier ones of Couture and Mathieu (1948) except for the Raman line 131 cm.−1 which they classify as belonging to Class E.

      The Brillouin components are well polarised and weaker than the symmetric Raman line 936 cm.−1

    • Author Affiliations

       

      V Chandrasekharan1

      1. Department of Physics, Indian Institute of Science, Bangalore
    • Dates

       
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