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Probing the hydroge...
Probing the hydrogen-bond network of water via time-resolved soft X-ray spectroscopy
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Huse, Nils (författare)
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Wen, Haidan (författare)
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Nordlund, Dennis (författare)
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Szilagyi, Erzsi (författare)
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Daranciang, Dan (författare)
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Miller, Timothy A. (författare)
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- Nilsson, Anders (författare)
- Stockholms universitet,Fysikum
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Schoenlein, Robert W. (författare)
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Lindenberg, Aaron M. (författare)
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2009
- 2009
- Engelska.
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Ingår i: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry (RSC). - 1463-9076 .- 1463-9084. ; 11:20, s. 3951-3957
- Relaterad länk:
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https://digital.libr...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We report time-resolved studies of hydrogen bonding in liquid H2O, in response to direct excitation of the O-H stretch mode at 3 mm, probed via soft X-ray absorption spectroscopy at the oxygen K-edge. This approach employs a newly developed nanofluidic cell for transient soft X-ray spectroscopy in the liquid phase. Distinct changes in the near-edge spectral region (XANES) are observed, and are indicative of a transient temperature rise of 10 K following transient laser excitation and rapid thermalization of vibrational energy. The rapid heating occurs at constant volume and the associated increase in internal pressure, estimated to be 8 MPa, is manifested by distinct spectral changes that differ from those induced by temperature alone. We conclude that the near-edge spectral shape of the oxygen K-edge is a sensitive probe of internal pressure, opening new possibilities for testing the validity of water models and providing new insight into the nature of hydrogen bonding in water.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- vibrational-energy relaxation
- absorption fine-structure
- liquid water
- temperature-dependence
- pressure-dependence
- optical-constants
- bending mode
- dynamics
- h2o
- ice
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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