Advertisement

An Instrument for the Measurement of Electric Dichroism

  • William H. Rahe
  • Robert J. Fraatz
  • Light K. Sun
  • Douglas R. C. Priore
  • Fritz S. Allen

Abstract

We have constructed an instrument for the measurement of electric dichroism. Through the use of photoelastic modulators we are able to shift the plane of polarization from parallel to the applied electric field to perpendicular, at a cyclic rate of 100 KHz-1 MHz. When an electric pulse is applied to a sample and dichroism arises, an A.C. component appears in the output of the photomultiplier tube. We have devised a digital procedure which is analogous to a lock-in amplifier for processing this A.C. signal.

Keywords

Reference Signal Electric Field Pulse Perpendicular Component Phase Sensitive Detection Digital Procedure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Allen F S and Van Holde K E, Rev. Sci. Instr., 41 (1970) 211.CrossRefGoogle Scholar
  2. 2.
    Brahms J, Pilet J, Damany H and Chandrasekharan V, P.N.A.S., 60 (1968) 1130.Google Scholar
  3. 3.
    Charney E and Halford R S, J. Chem. Phys., 29 (1958) 221.CrossRefGoogle Scholar
  4. 4.
    Dows D A and Buckingham AD, J. Mol. Spect., 12 (1964) 189.CrossRefGoogle Scholar
  5. 5.
    Kemp J C, J. Opt. Soc. Am., 59 (1969) 950.Google Scholar
  6. 6.
    Allen F S and Van Holde K E, Biopolymers, 10 (1971) 865.CrossRefGoogle Scholar
  7. 7.
    Hildebrand F B, “Introduction to Numerical Analysis”, McGraw-Hill, New York (1956).Google Scholar
  8. 8.
    Isenberg I and Dyson R D, Biophysical J., 9 (1969) 1337.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • William H. Rahe
    • 1
  • Robert J. Fraatz
    • 1
  • Light K. Sun
    • 1
  • Douglas R. C. Priore
    • 1
  • Fritz S. Allen
    • 1
  1. 1.Chemistry DepartmentUniversity of New MexicoAlbuquerqueUSA

Personalised recommendations