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Titolo:
X-RAY STUDIES OF ATOMIC LAYERING AT LIQUID-METAL SURFACES
Autore:
REGAN MJ; MAGNUSSEN OM; KAWAMOTO EH; PERSHAN PS; OCKO BM; MASKIL N; DEUTSCH M; LEE S; PENANEN K; BERMAN LE;
Indirizzi:
HARVARD UNIV,DIV APPL SCI CAMBRIDGE MA 02138 HARVARD UNIV,DEPT PHYS CAMBRIDGE MA 02138 BROOKHAVEN NATL LAB,DEPT PHYS UPTON NY 11973 BAR ILAN UNIV,DEPT PHYS IL-52100 RAMAT GAN ISRAEL BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE UPTON NY 11973
Titolo Testata:
Journal of non-crystalline solids
, volume: 207, anno: 1996,
parte:, 2
pagine: 762 - 766
SICI:
0022-3093(1996)207:<762:XSOALA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
VAPOR INTERFACE; CAPILLARY WAVES; AU(001) SURFACE; REFLECTIVITY; GALLIUM; PHASES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
M.J. Regan et al., "X-RAY STUDIES OF ATOMIC LAYERING AT LIQUID-METAL SURFACES", Journal of non-crystalline solids, 207, 1996, pp. 762-766

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 Angstrom(-1). For Ga, the only major deviations from Fresnel theory R(f) are nearq(z) = 2.4 Angstrom(-1), where there is a peak in the ratio R/R(f). For Hg, there is a broad peak near 2.15 Angstrom(-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 Angstrom for Ga and 3 Angstrom for Hg.

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Documento generato il 04/07/20 alle ore 16:41:57