Applied Physics A

, Volume 74, Supplement 1, pp s1670–s1672

Isotopic quantum correction to liquid methanol at -30 °C

  • C.J. Benmore
  • B. Tomberli
  • J. Neuefeind
  • P.A. Egelstaff

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

Authors and Affiliations

  • C.J. Benmore
    • 1
  • B. Tomberli
    • 2
  • J. Neuefeind
    • 3
  • P.A. Egelstaff
    • 2
  1. 1.Intense Pulsed Neutron Source Division, Argonne National Laboratory, Argonne, Illinois 60439, USAUS
  2. 2.Department of Physics, Univertsity of Guelph, Guelph, Ontario, N1G 2W1, CanadaCA
  3. 3.Hamburger Synchrotronstrahlungslaboratorium HASYLAB at Deutsches Elektronensynchrotron DESY, Notkestrasse 85, 22603 Hamburg, GermanyDE