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Polarized laser-induced photofragmentation studies of JKM-selected CH3I molecules: retention of orientation in optical and DC electric fields

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

The technique of linearly polarized laser-induced photofragmentation for the measurement of the degree of orientation of rotationally state-selected symmetric top molecules [Phys. Rev. Lett.59, 2951 (1987)] has been used to study the retention of molecular orientation in optical frequency AC and homogeneous DC electric fields. For CH3I beams, state-selected by the electrostatic hexapole focuser in several specific low-J parent states, recoupling of the iodine nuclear spin with the molecular rotational angular momentum occurs rapidly in weak fields, leading to some loss of orientation, but the resulting degree of orientation (i.e., theM F distribution) is retained in both DC and optical frequency electric fields. The direction of the orientation of the molecular axis can be inverted with 100% efficiency by changing the sign of the DC ‘orienting field’. The up/down asymmetry of the photofragment angular distribution can be observed with either parallel (vertical) or perpendicular (horizontal) laser polarization.

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References

  1. Stern, O.: Z. Phys.7, 249 (1921)

    Google Scholar 

  2. Gerlach, W., Stern, O.: Z. Phys.8, 110 (1921)

    Google Scholar 

  3. Gerlach, W., Stern, O.: Z. Phys.9, 349 (1922)

    Google Scholar 

  4. Gerlach, W., Stern, O.: Ann. Phys.74, 673 (1924)

    Google Scholar 

  5. Gerlach, W.: Ann. Phys.76, 163 (1925)

    Google Scholar 

  6. See Ramsey N.F.: Molecular beams. Oxford: Oxford University 1956

    Google Scholar 

  7. Bennewitz, H.G., Paul, W., Chlier, Ch.: Z. Phys.141, 6 (1955)

    Google Scholar 

  8. Auerbach, D., Bromberg, E.A., Wharton, L.: J. Chem. Phys.45, 2160 (1966);

    Google Scholar 

  9. Günther, F., Schügerl, K.: Z. Phys. Chem.80, 155 (1972);

    Google Scholar 

  10. Lübbert, A., Günther, F., Schügerl, K.: Chem. Phys. Lett.35, 210 (1975);

    Google Scholar 

  11. Lübbert, A., Rotzoll, G., Günther, F.: J. Chem. Phys.69, 5174 (1978)

    Google Scholar 

  12. Waech, T.G., Kramer, K.H., Bernstein, R.B.: J. Chem. Phys.48, 3978 (1968)

    Google Scholar 

  13. Kramer, K.H., Bernstein, R.B.: J. Chem. Phys.42, 767 (1965);

    Google Scholar 

  14. Bernstein, R.B.: Chemical dynamics via molecular beam and laser techniques, Chap. 3. New York: Oxford University Press 1982

    Google Scholar 

  15. English, T.C.: Rev. Sci. Instrum.42, 1440 (1971);

    Google Scholar 

  16. Gandhi, S.R., Bernstein, R.B.: J. Chem. Phys.87, 6457 (1987)

    Google Scholar 

  17. Brooks, P.R., Jones, E.M.: J. Chem. Phys.45, 3449 (1966);

    Google Scholar 

  18. Beuhler, R.J. Jr., Bernstein, R.B., Kramer, K.H.: J. Am. Chem. Soc.88, 5331 (1966)

    Google Scholar 

  19. Gandhi, S.R., Curtiss, T.J., Bernstein, R.B.: Phys. Rev. Lett.59, 2951 (1987)

    Google Scholar 

  20. Gedanken, A., Rowe, M.: Chem. Phys. Lett.34, 39 (1975)

    Google Scholar 

  21. Yang, S., Bersohn, R.: J. Chem. Phys.61, 4400 (1974)

    Google Scholar 

  22. Dzvonik, M., Yang, S., Bersohn, R.: J. Chem. Phys.61, 4408 (1974)

    Google Scholar 

  23. Barry, M.D., Gorry, P.A.: Mol. Phys.52, 461 (1984)

    Google Scholar 

  24. Van Veen, G.N.A., Baller, T., DeVries, A.E., Van Veen, N.J.A.: Chem. Phys.87, 405 (1984)

    Google Scholar 

  25. Knee, J.L., Khundkar, L.R., Zewail, A.H.: J. Chem. Phys.83, 1996 (1985)

    Google Scholar 

  26. Riley, S.J., Wilson, K.R.: Discuss. Faraday Soc.53, 132 (1972)

    Google Scholar 

  27. Choi, S.E., Bernstein, R.B.: J. Chem. Phys.85, 150 (1986)

    Google Scholar 

  28. Gandhi, S.R., Bernstein, R.B.: J. Chem. Phys.88, 1472 (1988)

    Google Scholar 

  29. Xu, Q.-X., Jung, K.-H., Bernstein, R.B.: J. Chem. Phys.89, 2099 (1988)

    Google Scholar 

  30. Gandhi, S.R., Curtiss, T.J., Xu, Q.-X., Choi, S.E., Bernstein, R.B.: Chem. Phys. Lett.132, 6 (1986);

    Google Scholar 

  31. Gandhi, S.R., Xu, Q.-X., Curtiss, T.J., Bernstein, R.B.: J. Phys. Chem.91, 5437 (1987)

    Google Scholar 

  32. Wiley, W.C., McLaren, I.H.: Rev. Sci. Instrum.26, 1150 (1955)

    Google Scholar 

  33. Hall, G.E., Sivakumar, N., Ogorzalek, R., Chawla, G., Haerri, H.-P., Houston, P.L., Burak, I., Hepburn, J.W.: Discuss. Faraday Soc.82, 13 (1986);

    Google Scholar 

  34. Ogorzalek Loo, R., Hall, G.E., Haerri, H.-P., Houston, P.L.: J. Phys. Chem.92, 5 (1988)

    Google Scholar 

  35. Jiang, Y., Giorgi-Arnazzi, M.R., Bernstein, R.B.: Chem. Phys.106, 171 (1986)

    Google Scholar 

  36. See for example, Smith, J.W.: Electric dipole moments. London: Butterworths 1955

    Google Scholar 

  37. Gel'mukhanov, F.K.: JETP Lett.46, 65 (1987) [Original Russian from Pis'ma Zh. Eksp. Teor. Fiz.46, 57 (1987)]

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, University of California, 90024, Los Angeles, CA, USA

    S. R. Gandhi & R. B. Bernstein

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  1. S. R. Gandhi
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  2. R. B. Bernstein
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Gandhi, S.R., Bernstein, R.B. Polarized laser-induced photofragmentation studies of JKM-selected CH3I molecules: retention of orientation in optical and DC electric fields. Z Phys D - Atoms, Molecules and Clusters 10, 179–185 (1988). https://doi.org/10.1007/BF01384852

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  • DOI: https://doi.org/10.1007/BF01384852

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