Petrologie und Geochemie Dr. Ralf Dohmen Wissenschaftlicher Mitarbeiter Laborleiter für gepulste Laserabscheidung Dr. Ralf Dohmen Photo by Raúl Fonseca Dr. Ralf Dohmen (Dr. rer. Nat. 1999, Köln, Germany) E-Mail - ralf.dohmen@rub.de Tel.: +49 234 32-24394 Raum: IA 4/113 Research Interests Experimental and theoretical petrology. My research interest covers various different topics within theoretical and experimental petrology where diffusion or diffusion-controlled processes are involved. It comprises theoretical modeling as well as experiments to understand and quantify the reaction kinetics of multi-phase systems or simply to measure diffusion coefficients for various applications, e.g., mineral rheology or diffusion chronometry. Some of my current projects are: Pulsed Laser Deposition of silicate thin films and its application to volume and grain boundary diffusion experiments Experimental investigation and modeling of diffusive fractionation of isotopes and elements Thermodynamic modeling of element partitioning between plagioclase and melt Experimental and theoretical studies of diffusion and partitioning behavior of Li in olivine Diffusion modeling of chemical zoning in primitive meteorites to extract cooling rates and identify oxidation events in the solar nebula Modeling of chemical zoning in phenocrysts to determine time scales of magma recharging events Current scientific collaborations: International Katharina Marquardt, Imperial College London, Department of Materials, London, UK Paul Baral, Michaël Coulombier, Hosni Idrissi, Institute of Mechanics, Materials and Civil Engineering (IMMC), Louvain‐la‐Neuve, Belgium Patrick Cordier, Univ. Lille, Unité Matériaux et Transformations, France Corentin Le Guillou, Unité Matériaux et Transformations, Université de Lille, France Publication List Teaching Wintersemester 176305 Polarisationsmikroskopie I BSc-Level (3. Semester): Dohmen 176504 Polarisationsmikroskopie II BSc-Level (5. Semester): Dohmen Sommersemester 176107 Sicherheit in Gelände und Labor Chakraborty, Sumit; Fockenberg, Thomas; Schuth, Stephan; Dohmen, Ralf; Duda, Mandy Education 1999 – Dr. rer. nat. Degree, University of Cologne Dissertation: Gas phase as a mediator for solid-solid reactions: Knudsen cell mass spectrometry experiments and a thermodynamic kinetic modelling 1996 – Physics Diploma, University of Cologne Thesis: Development of a computer control of a Knudsen cell mass spectrometer to investigate element fractionations in the Solar Nebula Positions held 04/2010 - present: Research Associate Institute for Geology, Mineralogy and Geophysics, Ruhr-University Bochum 02/2009 - 03/2010: Research Associate Dept. of Earth Sciences, University of Bristol, United Kingdom 12/1999 - 01/2009: Research Associate Institute for Geology, Mineralogy and Geophysics, Ruhr-University Bochum 02/1996 - 10/1999: Research Assistant Institute for Mineralogy and Geochemistry, University to Cologne Academic honours 1999 Best Paper published in 1998 in American Mineralogist award, Mineralogical Society of America Das könnte Sie auch interessieren DFG Forschergruppe 2881 Diffusion Chronometry of magmatic systems Geological processes occur in and on the Earth over a range of timescales that form a nested, hierarchical structure. Determining the durations of processes that occur on the shorter end of this time-spectrum has been a challenge. The tools of diffusion chronometry have emerged as a very promising method to provide solutions in many situations. The Forschergruppe Physico-chemical Mineralogy Prof. Sumit Chakraborty Experiments, theory and field studies to understand timescales and mechanisms of geochemical and cosmochemical processes. Atomistic mechanisms of flow and creep. Diffusion controlled processes in Materials Science problems. mehr erfahren Prof. Sumit Chakraborty Petrologie und Geochemie Experimentelle und analytische Einrichtungen Experimentelle Einrichtungen - Petrologie und Geochemie mehr erfahren Experimentelle und analytische Einrichtungen
DFG Forschergruppe 2881 Diffusion Chronometry of magmatic systems Geological processes occur in and on the Earth over a range of timescales that form a nested, hierarchical structure. Determining the durations of processes that occur on the shorter end of this time-spectrum has been a challenge. The tools of diffusion chronometry have emerged as a very promising method to provide solutions in many situations. The Forschergruppe
Physico-chemical Mineralogy Prof. Sumit Chakraborty Experiments, theory and field studies to understand timescales and mechanisms of geochemical and cosmochemical processes. Atomistic mechanisms of flow and creep. Diffusion controlled processes in Materials Science problems. mehr erfahren Prof. Sumit Chakraborty
Petrologie und Geochemie Experimentelle und analytische Einrichtungen Experimentelle Einrichtungen - Petrologie und Geochemie mehr erfahren Experimentelle und analytische Einrichtungen