# X-ray Studies of Atomic Layering at Liquid Metal Surfaces

 Title: X-ray Studies of Atomic Layering at Liquid Metal Surfaces Author: Regan, M. J.; Magnussen, O. M.; Kawamoto, E. H.; Pershan, Peter S.; Ocko, B. M.; Maskil, N.; Deutsch, M.; Lee, S.; Penanen, K.; Berman, L. E. Note: Order does not necessarily reflect citation order of authors. Citation: Regan, M. J., O. M. Magnussen, E. H. Kawamoto, Peter S. Pershan, B. M. Ocko, N. Maskil, M. Deutsch, S. Lee, K. Penanen, and L. E. Berman. 1996. X-ray studies of atomic layering at liquid metal surfaces. Journal of Non-Crystalline Solids 205-207(2): 762-766. Access Status: Full text of the requested work is not available in DASH at this time (“dark deposit”). For more information on dark deposits, see our FAQ. Full Text & Related Files: Regan_X-ray_JNCS.pdf (486.1Kb; PDF) Abstract: Surface-induced layering has been observed in liquid gallium and mercury using X-ray reflectivity. The specular reflectivity R($$q_z$$) has been measured to wavevector transfers as large as $$q_z$$ = 3.0 Å$$^{−1}$$. For Ga, the only major deviations from Fresnel theory $$R_f$$ are near qz = 2.4 Å$$^{−1}$$, where there is a peak in the ratio $$R/R_f$$, For Hg, there is a broad peak near 2.15 Å$$^{−1}$$. The data have been collected on a sputtered clean, ultra-high vacuum Ga surface and on a Hg surface in a reducing atmosphere of hydrogen. The data can be explained with a layered liquid/vapor interface that is roughened by thermally excited capillary waves. The layer spacing is similar to the Ga or Hg atomic dimensions, extending into the bulk with an exponential decay length of 6 Å for Ga and 3 Å for Hg. Published Version: doi:10.1016/S0022-3093(96)00303-1 Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10356600 Downloads of this work: