APS Logo

Real-space local self-motion of protonated and deuterated water

ORAL

Abstract

We report on the self-part of the Van Hove correlation function of water and deuterated water. The Van Hove correlation function was determined by transforming inelastic scattering spectra of neutrons or x-rays over a wide range of momentum transfer and energy transfer to space and time. The short-range diffusivity was estimated from the Van Hove correlation function in the framework of the Gaussian approximation. The diffusivity was found to be different from the long-range macroscopic diffusivity in the hydrodynamic regime, providing information about the local atomic dynamics.

–

Publication: Phys. Rev. E 109, 064608 (2024).

Presenters

  • Yuya Shinohara

    Materials Science and Technology Division, Oak Ridge National Laboratory, USA., Oak Ridge National Laboratory

Authors

  • Yuya Shinohara

    Materials Science and Technology Division, Oak Ridge National Laboratory, USA., Oak Ridge National Laboratory

  • Takuya Iwashita

    Oita University

  • Masahiro Nakanishi

    Fukuoka Institute of Technology

  • Wojciech Dmowski

    Department of Materials Science and Engineering, The University of Tennessee, Knoxville, USA., University of Tennessee, Knoxville

  • Chae Woo Ryu

    Department of Materials Science and Engineering, Hongik University, Seoul 04066, South Korea., Hongik University

  • Douglas L Abernathy

    Oak Ridge National Laboratory

  • Daisuke Ishikawa

    Japan Synchrotron Radiation Research Institute

  • Alfred Q R Baron

    RIKEN SPring-8 Center

  • Takeshi Egami

    Department of Physics, and Materials Science and Engineering, The University of Tennessee, Knoxville, USA., University of Tennessee