Applied Physics A

, Volume 74, Supplement 1, pp s1670–s1672

Isotopic quantum correction to liquid methanol at -30 °C

Authors

  • C.J. Benmore
    • Intense Pulsed Neutron Source Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • B. Tomberli
    • Department of Physics, Univertsity of Guelph, Guelph, Ontario, N1G 2W1, Canada
  • J. Neuefeind
    • Hamburger Synchrotronstrahlungslaboratorium HASYLAB at Deutsches Elektronensynchrotron DESY, Notkestrasse 85, 22603 Hamburg, Germany
  • P.A. Egelstaff
    • Department of Physics, Univertsity of Guelph, Guelph, Ontario, N1G 2W1, Canada

DOI: 10.1007/s003390201768

Cite this article as:
Benmore, C., Tomberli, B., Neuefeind, J. et al. Appl Phys A (2002) 74: s1670. doi:10.1007/s003390201768

Abstract.

Hydrogen/deuterium (H/D) substitution of molecular liquids in neutron diffraction is a powerful tool for structure determination. However, recent high-energy X-ray studies have found observable differences in the structures of many H and D liquids at the same temperature. In some cases this isotopic quantum effect can be corrected for by measuring the D sample at a slightly different temperature to the H sample. The example of hydroxyl isotopic substitution in liquid methanol at -30 °C is presented. The magnitude of the quantum effect is shown to be significant when compared to the size of the first-order isotopic neutron-difference function.

PACS: 61.12.-q; 61.10.-i

Copyright information

© Springer-Verlag 2002