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Anomalous temperatu...
Anomalous temperature dependence of the experimental x-ray structure factor of supercooled water
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- Esmaeildoost, Niloofar (författare)
- KTH,Tillämpad fysik
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- Pathak, Harshad (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Späh, Alexander, 1989- (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Lane, Thomas J. (författare)
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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- Kim, Kyung Hwan (författare)
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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- Yang, Cheolhee (författare)
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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- Amann-Winkel, Katrin (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Ladd-Parada, Marjorie (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Perakis, Fivos (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Koliyadu, Jayanath (författare)
- European XFEL, 22869 Schenefeld, Germany
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- Oggenfuss, Alexander R. (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Johnson, Philip J. M. (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Deng, Yunpei (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Zerdane, Serhane (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Mankowsky, Roman (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Beaud, Paul (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Lemke, Henrik T. (författare)
- SwissFEL, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
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- Nilsson, Anders (författare)
- Stockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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- Sellberg, Jonas A. (författare)
- KTH,Biomedicinsk fysik och röntgenfysik
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(creator_code:org_t)
- AIP Publishing, 2021
- 2021
- Engelska.
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Ingår i: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 155:21, s. 214501-214501
- Relaterad länk:
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https://doi.org/10.1...
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https://aip.scitatio...
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https://kth.diva-por... (primary) (Raw object)
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https://aip.scitatio...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The structural changes of water upon deep supercooling were studied through wide-angle x-ray scattering at SwissFEL. The experimental setup had a momentum transfer range of 4.5 Å-1, which covered the principal doublet of the x-ray structure factor of water. The oxygen-oxygen structure factor was obtained for temperatures down to 228.5 ± 0.6 K. Similar to previous studies, the second diffraction peak increased strongly in amplitude as the structural change accelerated toward a local tetrahedral structure upon deep supercooling. We also observed an anomalous trend for the second peak position of the oxygen-oxygen structure factor (q2). We found that q2 exhibits an unprecedented positive partial derivative with respect to temperature for temperatures below 236 K. Based on Fourier inversion of our experimental data combined with reference data, we propose that the anomalous q2 shift originates from that a repeat spacing in the tetrahedral network, associated with all peaks in the oxygen-oxygen pair-correlation function, gives rise to a less dense local ordering that resembles that of low-density amorphous ice. The findings are consistent with that liquid water consists of a pentamer-based hydrogen-bonded network with low density upon deep supercooling.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Biological and Biomedical Physics
- Biologisk och biomedicinsk fysik
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- art (ämneskategori)
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Esmaeildoost, Ni ...
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Pathak, Harshad
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Späh, Alexander, ...
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Lane, Thomas J.
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Kim, Kyung Hwan
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Yang, Cheolhee
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Amann-Winkel, Ka ...
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Ladd-Parada, Mar ...
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Perakis, Fivos
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Koliyadu, Jayana ...
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Oggenfuss, Alexa ...
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Johnson, Philip ...
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Deng, Yunpei
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Zerdane, Serhane
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Mankowsky, Roman
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Beaud, Paul
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Lemke, Henrik T.
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Nilsson, Anders
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Sellberg, Jonas ...
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- NATURVETENSKAP
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NATURVETENSKAP
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Kungliga Tekniska Högskolan
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Stockholms universitet