Dr. Lemke, Kono


Dr. Lemke, Kono

Associate Professor

Research in our lab involves development of new FT-MS and IR spectroscopic techniques and their application to problems in physical geochemistry. Our most recent interests include the use of tunable laser sources for infrared multiphoton dissociation (IRMPD) measurements of water solvated ion clusters. The experimental set-up includes a 7 Tesla FT-MS facility used in tandem with a pulsed Nd:YAG pumped OPO/OPA laser system that delivers tunable IR radiation in the 2800-4300 cm-1 range. This set up is used to carry out FT-MS and photofragmentation experiments on small ion clusters and related materials with a major focus on the configuration of the solvation shell. We also utilize a wide range of quantum chemical techniques to explore the structure and properties of clusters and their solvation shell and address questions of relevance to geochemistry and ore fluid processes in particular.


Vordiplom TU Berlin, 1995, M.Sc. University of Bristol, 1998, Ph.D. Stanford University, 2003; Postdoctoral study in Physical Geochemistry, ETH-Zürich, 2004-2008

PhD openings:
2241 5474
2517 6912
FT-MS and IRMPD studies of Microhydrated Clusters


EASC2401     Fluid/solid interactions in earth processes
CCST9018     Origin and Evolution of Life
CCGL9033     Weapons of Mass Destruction: Science, Proliferation and Terrorism
GRSC6009     Research Ethics for Graduate Students

Selected Publications

  1. K.H. Lemke and T.M Seward (2018) Molecular clusters and solvation in volcanic and hydrothermal vapors. Reviews in Mineralogy and Geochemistry, 84, 57.
  2. K.H. Lemke (2017) Structure and binding energy of the H2S dimer at the CCSD(T) complete basis set limit.  Journal of Chemical Physics, 146, 234301, doi: 10.1063/1.4985094
  3. A. Stefansson, K.H. Lemke, P. Benezeth and J. Schott (2017) Magnesium bicarbonate and carbonate interactions in aqueous solutions: An infrared spectroscopic and quantum chemical study. Geochimica et Cosmochimica Acta, 198, 271, doi:10.1016/j.gca.2016.10.032.
  4. K.H. Lemke (2014). Structures and thermodynamic properties of (C2H6)n (n=2-8) by M06-2X and DFT-D theory: Implications for Titan's atmospheric chemistry. Chemical Physics Letters, 601, 194, doi:10.1016/j.cplett.2014.03.051.
  5. K.H. Lemke (2014). Gold Chloride Clusters with Au (III) and Au (I) probed by FT-ICR mass spectrometry and MP2 theory. Physical Chemistry Chemical Physics. 16, 7813, doi:10.1039/c3cp55109a.