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Staff Scientists

George D. Cody
Acting Director
E-mail: gcody@ciw.edu
Phone: 202-478-8980

George D. Cody specializes in chemical-structural analyses of solid phase organics. His research is focused on determining the diagenetic reactions that define organic sediment maturation. Other interests include examining the molecular structure of extraterrestrial organic solids contained within carbonaceous chondritic meteorites and more recently, comets. He received a Ph.D in geosciences from Pennsylvania State University in 1992, and a B.S. in geology from University of Massachusetts at Amherst in 1982.

 

Ronald E. Cohen
Senior Staff Scientist
E-mail: rcohen@ciw.edu
Phone: 202-478-8937

Ronald E. Cohen's primary focus is the study of materials through first principles research including properties of materials under extreme conditions such as high pressure and temperature. His research is applied to topics and problems in geophysics and technological materials. He obtained a Ph.D. in geology from Harvard University in 1985, and a BSc in geology from Indiana University in 1979. He is also a Professor of Earth Sciences at University College London under a European Advanced Grant.

 

Yingwei Fei
Senior Staff Scientist
E-mail: yfei@ciw.edu
Phone: 202-478-8936

Yingwei Fei examines materials at high pressure and temperature. He is interested in phase transitions, element partitioning, melting relations, chemical reactions and physical properties with applications to geophysics, petrology, mineral physics, geochemistry and planetary sciences. He obtained a Ph.D. in geochemistry from City University of New York in 1989 and a B.S. in geochemistry from Zhejiang University, China in 1982.

 

Alexander Goncharov
Senior Staff Scientist
E-mail: agoncharov@ciw.edu
Phone: 202-478-8947

Alexander F. Goncharov is a senior staff scientist at the Geophysical Laboratory. His research focuses on examining the properties of materials under extreme conditions of pressure, temperature, and strain rate and its applications to planetary science, geophysics, geochemistry, and synthesis of novel materials by design. He received a Ph.D. in physics from the Russian Academy of Sciences, Institute of Spectroscopy in 1983, and a combined M.A. and M.S. in physics from the Moscow Institute for Physics and Technology in 1979.

 

Robert M. Hazen
Senior Staff Scientist
E-mail: rhazen@ciw.edu
Phone: 202-478-8962

Robert M. Hazen's research focuses on aspects of the coevolving geosphere and biosphere, especially in the context of Earth's evolving mineralogy. His group investigates interactions among organic biomolecules and mineral surfaces, mineral-mediated chemistry in the context of origins of life, and the emergence of pre-biotic chemical complexity. In recent years he has introduced "mineral evolution," which is the study of Earth's changing near-surface mineralogy through deep time, and "mineral ecology," which focuses on statistical aspects of the diversity and distribution of minerals on terrestrial planets. He obtained a Ph.D. in mineralogy and crystallography from Harvard University in 1975, and a B.S. and S.M. in earth science from Massachusetts Institute for Technology in 1970 and 1971. For more information see: http://hazen.gl.ciw.edu

 

Russell J. Hemley
Senior Staff Scientist
E-mail: rhemley@ciw.edu
Phone: 202-478-8951

Russell J. Hemley is a senior staff scientist of the Geophysical Laboratory. His research examines the properties of materials at high-pressures and its applications to geophysics, geochemistry and planetary science, as well as to theoretical condensed-matter physics and chemistry. He uses optical spectroscopy, x-ray diffraction, and diamond-cell techniques to conduct high-pressure experimental and theoretical studies in condensed-matter physics, earth and planetary science and materials science. He obtained a Ph.D. and M.A. in physical chemistry from Harvard University in 1983 and 1980, and received a B.A. in chemistry and philosophy from Wesleyan University in 1977.

 

Wesley T. Huntress
Director Emeritus
E-mail: whuntress@ciw.edu
Phone: 202-478-8910

Wesley T. Huntress, Jr. is Director Emeritus of the Geophysical Laboratory. His research examines the chemical processes occurring within the interstellar medium, comets, and planetary atmospheres. He received a Ph.D. in chemical physics from Stanford University in 1968, and a B.S. in chemistry from Brown University in 1964. He served as project scientist for planetary flight missions at Caltech's Jet Propulsion Laboratory in the 1980s and at NASA as Director of Solar System Exploration and Associate Administrator for Space Science in the 1990s.

 

T. Neil Irvine
Emeritus Staff Scientist
E-mail: nirvine@ciw.edu
Phone: 202-478-8950

T. Neil Irvine is a staff member emeritus at the Geophysical Laboratory. His areas of interest include field, analytical and experimental studies of petrology, ore deposits, tectonic settings and layered igneous intrusions. He obtained a Ph.D. in economic geology and geochemistry from California Institute of Technology in 1959, and a B.S. and M.S. from University of Manitoba, Canada in 1953 and 1956.

 

Anat Shahar
Senior Staff Scientist
E-mail: ashahar@ciw.edu
Phone: 202-478-8929

Anat Shahar's research focuses on stable isotope geochemistry at high pressure and/or temperature. She conducts high P/T experiments and traces the isotopes to answer questions that span from the formation of the first solids in the solar system to the formation of the cores of planets. She obtained a Ph.D. in geochemistry from UCLA in 2008, and a M.E. and B.S. from Cornell University in 2003 and 2002.

 

Ho-kwang (Dave) Mao
Senior Staff Scientist
E-mail: hmao@ciw.edu
Phone: 202-478-8935

Ho-kwang Mao's research centers on ultra-high pressure physics, chemistry, material sciences, geophysics, geochemistry and planetary sciences using diamond-anvil cell techniques that he has pioneered. He received a Ph.D and MSc from University of Rochester in 1968 and 1966, and a BSc in geology from National University in Taiwan, China in 1963.

 

Bjørn O. Mysen
Senior Staff Scientist
E-mail: bmysen@ciw.edu
Phone: 202-478-8975

Bjørn O. Mysen's areas of research include experimental high-temperature and pressure analyses, investigations into the properties and processes of rock-formation and related materials with an emphasis on melting. He is also interested in examining the phase relations of mantle materials, fluids in melting processes, the properties and structure of melts and glasses, element partitioning between minerals, fluids and melts at high-pressures and temperatures. He obtained a Ph.D in geochemistry from Pennsylvania State University in 1974, and a BSc and MA from University of Oslo in 1969 and 1971.

 

Charles Prewitt
Director Emeritus
E-mail: cprewitt@ciw.edu

Charlie's research interests include the characterization of minerals, analogs, and new materials. His research on silicates and oxide materials, specifically, and his development of principles of ionic radii in these materials, has been highly influential in the earth and materials sciences over the past 40 years. Charlie was the Director of the Geophysical Laboratory from 1986 to 1999. For more information, please view Russell J. Hemley's talk presented at an MSA symposium in 2003 to honor Charlie's receipt of the Roebling Medal.

 

Douglas Rumble III
Senior Staff Scientist
E-mail: drumble@ciw.edu
Phone: 202-478-8990

Douglas Rumble is a petrologist and geochemist with the Geophysical Laboratory of the Carnegie Institution of Washington. He earned a BA from Columbia College and a PhD from Harvard University. He served as assistant professor at UCLA and on detail as a Program Director in the Earth Sciences Division of the US National Science Foundation. He worked as a Board Member of Geoscience World to provide top-quality electronic publishing technology to Earth Science Societies for their journals. Current research, led by E. D. Young (UCLA), is on development of Panorama, a high mass resolution mass spectrometer designed by P. A. Freedman and built by Nu Instruments Ltd. for the measurement of multiply substituted isotopologues of geochemical and atmospheric gases

 

Andrew Steele
Senior Staff Scientist
E-mail: asteele@ciw.edu
Phone: 202-478-8974

Andrew Steele uses traditional and biotechnological approaches for the detection of microbial life in astrobiology and solar system exploration. He received a Ph.D in biotechnology from the University of Portsmouth, U.K. in 1996, and a BSc in microbiology and biochemistry from the University of Central Lancashire, U.K. in 1992.

 

Timothy Strobel
Staff Scientist
E-mail: tstrobel@ciw.edu
Phone: 202-478-8943

Timothy Strobel's research is centered around the synthesis and characterization of novel materials for energy and advanced applications. New materials are synthesized using unique pressure-temperature conditions and through innovative processing pathways. Of particular interest are extended structures rich in carbon, silicon and germanium, as well as hydrogen-rich molecular systems. He received his B.S. (2004) and Ph.D. (2008) in Chemical Engineering from the Colorado School of Mines. In 2008 he joined the Geophysical Laboratory of the Carnegie Institution of Washington as a Carnegie Postdoctoral Fellow and was appointed Staff Scientist in 2011.

 

Viktor Struzhkin
Senior Staff Scientist
E-mail: vstruzhkin@ciw.edu
Phone: 202-478-8952

Viktor V. Struzhkin focuses on experimental research at high pressures. He undertakes transport and magnetic measurements, and applies optical and synchrotron spectroscopy techniques to geophysics, planetary science and condensed-matter physics research. He obtained a Ph.D in solid-state physics from Institute for High Pressure Physics, Russian Academy of Science in 1991 and a combined BSc and MSc in physics from Moscow Institute of Physics and Technology, Russia in 1980.