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Title: X-ray Scattering and O–O Pair-Distribution Functions of Amorphous Ices

Journal Article · · Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry
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  1. Stockholm Univ. (Sweden). Dept. of Physics, AlbaNova University Center
  2. Stockholm Univ. (Sweden). Dept. of Environmental Science and Analytical Chemistry (ACES), Bolin Centre for Climate Research
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-Ray Science Division

The structure factor and oxygen-oxygen pair distribution functions of amorphous ices at liquid nitrogen temperature (T = 77 K) have been derived from wide-angle X-ray scattering (WAXS) up to interatomic distances of r = 23 angstrom, where local structure differences between the amorphous ices can be seen for the entire range. The distances to the first coordination shell for low-, high-, and very-high-density amorphous ice (LDA, HDA, VHDA) were determined to be 2.75, 2.78, and 2.80 angstrom, respectively, with high accuracy due to measurements up to a large momentum transfer of 23 angstrom(-1). Similarities in pair-distribution functions between LDA and supercooled water at 254.1 K, HDA and liquid water at 365.9 K, and VHDA and high-pressure liquid water were found up to around 8 angstrom, but beyond that at longer distances, the similarities were lost. In addition, the structure of the high-density amorphous ices was compared to high-pressure crystalline ices IV, IX, and XII, and conclusions were drawn about the local ordering.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
European Research Council (ERC); Swedish Research Council (SRC); USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1480853
Journal Information:
Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry, Vol. 122, Issue 30; ISSN 1520-6106
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (9)

Amorphous and crystalline ices studied by dielectric spectroscopy journal June 2019
X-ray studies of the transformation from high- to low-density amorphous water
  • Mariedahl, Daniel; Perakis, Fivos; Späh, Alexander
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2146 https://doi.org/10.1098/rsta.2018.0164
journal April 2019
Advances in the experimental exploration of water’s phase diagram journal February 2019
Structural differences between unannealed and expanded high-density amorphous ice based on isotope substitution neutron diffraction journal August 2019
X-ray absorption spectrum simulations of hexagonal ice journal January 2019
In situ x-ray diffraction study of polyamorphism in H 2 O under isothermal compression and decompression journal June 2019
Nature of polyamorphic transformations in H 2 O under isothermal compression and decompression journal July 2019
Intermediate range O–O correlations in supercooled water down to 235 K journal June 2019
Advances in the experimental exploration of water's phase diagram text January 2018