Evaporation and molecular beam scattering from a flat liquid jet

Authors

  • Chin Lee University of California, Berkeley & Lawrence Berkeley National Laboratory - United States ,
  • Marvin Pohl University of California, Berkeley & Lawrence Berkeley National Laboratory ,
  • Isaac Ramphal University of California, Berkeley & Lawrence Berkeley National Laboratory - United States ,
  • Walt Yang University of California, Berkeley & Lawrence Berkeley National Laboratory - United States ,
  • Bernd Winter Fritz-Haber-Institut der Max-Planck-Gesellschaft - Germany ,
  • Bernd Abel Leibniz-Institut fur Oberflachenmodifizierung eV - Germany ,
  • Daniel Neumark University of California, Berkeley & Lawrence Berkeley National Laboratory - United States

Abstract

An experimental setup for molecular beam scattering from flat liquid sheets has been developed, with the goal of studying reactions at gas-liquid interfaces for volatile liquids. Specifically, a crossed molecular beam instrument that can measure angular and translational energy distributions of scattered products has been adapted for liquid jet scattering. A microfluidic chip is used to create a stable flat liquid sheet inside vacuum from which scattering occurs, and both evaporation and scattering from this sheet are characterized by a rotatable mass spectrometer that can measure product time-of-flight distributions. This manuscript describes the instrument and reports on first measurements of evaporation of dodecane and Ne from a Ne-doped dodecane flat jet, as well as scattering of Ne from a flat jet of pure dodecane.

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