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Optical Activity, Circular Dichroism, and Absorption of Crystalline Nickel Sulphate

L. R. Ingersoll

P. Rudnick, F. G. Slack, and N. Underwood

  • University of Wisconsin, Madison, Wisconsin

  • Vanderbilt University, Nashville, Tennessee

Phys. Rev. 57, 1145 – Published 15 June, 1940

DOI: https://doi.org/10.1103/PhysRev.57.1145

Abstract

Previous measurements of the optical rotatory power of crystalline α — NiSO4·6H2O in the visible spectrum have now been extended to cover the wave-length range from 0.25μ to 2.2μ. Circular dichroism and absorption measurements have also been made over the infra-red range. Striking anomalies in the rotatory dispersion curve appear at 0.69μ and particularly at 1.16μ, corresponding to absorption and circular dichroism maxima at these wave-lengths. The theoretical relation between rotatory power and dichroism is verified quite exactly and in detail, particularly with regard to the 1.16μ band.

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