The nature and evolution of planetary interiors, as well as the properties of materials at high pressures.
Raymond Jeanloz and his group study the nature and evolution of planetary interiors, as well as the properties of materials at high pressures. Much of their work is based on experiments with laser-heated diamond-anvil cells, and they also pursue shock-wave experiments and quantum mechanical calculations of material properties.
Raymond Jeanloz' group uses mineral physics to understand the properties and dynamics of planetary interiors. They helped obtain the first experimental constraints on the temperature at Earth's center, and showed that a single perovskite-structured mineral (stable only at pressures above 20 GPa) makes up the bulk of the rocky mantle. They also showed that the deep mantle reacts chemically with the liquid iron alloy of the outer core, making the core-mantle boundary one of Earth's most dynamic regions. Studies on carbon suggest that diamond may be hailing downward inside Neptune and Uranus.
Experiments applying laser-shock methods to samples pre-compressed in diamond-anvil cells are providing new information about the chemical bonding in crystals and fluids at deep-planetary conditions, and are extending laboratory compression experiments from the Megabar to the Gigabar range: beyond the atomic unit of pressure (294 Mbar), and into the regime of "kilovolt chemistry" that engages inner atomic orbitals in chemical bonding.
SELECTED RECENT PUBLICATIONS [*indicates contributions in policy]
Lee, K. K. M., Benedetti, L. R., Jeanloz, R., Celliers, P. M., Eggert, J. H., Hicks, D. G., Moon, S. J., Mackinnon, A., Da Silva, L. B., Bradley, D. K., Unites, W., Collins, G. W., Henry, E., Koenig, M., Benuzzi-Mounaix, A., Paley, J., and Neely, D., 2006, Laser-driven shock experiments on pre-compressed water: Implications for “icy” giant planets, J.Chem. Phys., 125, 014701.
*May, M., Davis, J., and Jeanloz, R., 2006, Preparing for the worst, Nature, 443, 907-908.
Verma, A. K., Modak, P., Rao, R. S., Godwal, B. K., and Jeanloz, R., 2007, High-pressure phases of titanium: First-principles calculations, Phys. Rev. B, 75, 014109.
Rozenberg, G. Kh., Amiel, Y., Pasternak, M. P., Jeanloz, R., Hanfland, M., and Taylor, R. D., 2007, Structural characterization of temperature- and pressure-induced inverse–normal spinel transformation in magnetite, Phys. Rev. B, 75,020102(R).
Jeanloz, R., Celliers, P. M., Collins, G. W., Eggert, J. H., Lee, K. K. M., McWilliams, R. S., Brygoo, S., and Loubeyre, P., 2007, Achieving high-density states through shock-wave loading of pre-compressed samples, Proc.National Acad. Sci. (US), 104, 9116-9124.
Speziale, S., Lee,V. E., Clark, S. M., Lin, J. F., Pasternak, M. P., and Jeanloz, R., 2007, Effects of Fe spin transition on the elasticity of (Mg,Fe)O magnesiowüstites and implications for the seismological properties of the Earth’s lower mantle, J. Geophys. Res., 112, B10212,doi:10.1029/2006JB004730.
Stixrude, L., and Jeanloz, R., 2007, Constraints from mineral physics on seismological models, in: Treatise of Geophysics, v. 1, Ch. 22, 775-803.
Montgomery, W., Crowhurst, J. C., Zaug, J. M., and Jeanloz, R., 2008, The chemistry of cyanuric acid (H3C3N3O3) under high pressure and high temperature, J. Phys. Chem. B, 112, 2644-2648.
Eggert, J., Brygoo, S., Loubeyre, P., McWilliams, R. S., Celliers, P. M., Hicks, D., Boehly, T. R., Jeanloz, R., and Collins, G. W., 2008, Hugoniot data for heliumin the ionization regime, Phys. Rev. Lett., 100, 124503.
Speziale, S., Jeanloz, R., Clark, S. M., Meenakshi, S., Vijayakumar, V., Verma, A. K., Rao, R. S., and Godwal, B. K., 2008, Axial ratio anomalies and electronic topological transitions in Cd0.80Hg0.20 at high pressures, J. Phys. Chem. Solids, 69, 2325-2331.
Stixrude, L., and Jeanloz, R., 2008, Fluid helium at conditions of giant planetary interiors, Proc. National Acad. Sci. (US), 105, 11071-11075.
Hicks, D. G., Boehly, T. R., Celliers, P. M., Bradley, D. K., Eggert, J. H., McWilliams, R. S., Jeanloz, R., and Collins, G. W., 2008, High precision measurements of the diamond Hugoniot in and above the melt region, Phys. Rev. B, 78, 174102.
*Jeanloz, R., 2008, Comprehensive Nuclear-Test-Ban Treaty and U.S. Security, in Reykjavik Revisited, Steps Toward a World Free of Nuclear Weapons (G. P. Shultz, S. D. Drell and J. E. Goodby, eds.), Hoover Press, Stanford, CA, pp. 369-398.
Godwal, B. K., Verma, A. K., and Jeanloz, R., 2009, Molecular dynamics studies on materials under laser shocks,Phase Transitions, 82, 167-190.
Jeanloz, R., 2009, Planets under pressure, Physics World, 22, 34-37.
Godwal, B. K., Petruska, E. A., Speziale, S., Yan, J., Clark, S. M., Kruger, M. B., and Jeanloz, R., 2009, High-pressure Raman and x-ray diffraction studies on LaB6, Phys. Rev. B., 80, 172104.
Gleason, A. E., Chen, B., and Jeanloz, R., 2009, Grain boundary effects in Brillouin scattering at ambient and high pressures, Geophys. Res. Lett., 36, 10.1029/2009GL040420.
Eggert, J. H., Hicks, D. G., Celliers, P. M., Bradley, D. K., McWilliams, R. S., Jeanloz, R., Miller, J. E., Boehly, T. R., and Collins, G. W., 2010, Melting temperature of diamond at ultra-high pressure, Nature Physics, 6, 40-43.
McWilliams, R. S., Eggert, J. H., Hicks, D. G., Bradley, D. K., Celliers, P. M., Spaulding, D. K., Boehly, T. R., Collins, G. W., and Jeanloz, R., 2010, Strength effects in diamond under shock compression from 0.1 to 1 TPa,Phys. Rev. B., 81, 014111.
Xu, W. M., Rozenberg, G. K., Pasternak, M. P., Kurnosov, A., Dubrovinsky, L. S., Pascarelli, S., Munoz, M., Vaccari, M.,Hanfland, M., and Jeanloz, R., 2010, Pressure-induced Fe « Cu cationicvalence exchange and its structural consequences: High-pressure studies of delafossite CuFeO2, Phys. Rev.B, 81, 104110.
Chen, B., Gleason, A. E., Yan, J. Y., Koski, K. J., Clark, S. M., and Jeanloz, R., 2010, Elasticity, strength and refractive index of argon at high pressures, Phys. Rev. B., 81, 144110.
Celliers, P. M., Loubeyre, P., Eggert, J.H., Brygoo, S., McWilliams, R. S., Hicks, D. G., Boehly, T. R., Jeanloz, R., and Collins, G. W., 2010, The insulator to conducting transition in dense fluid helium, Phys. Rev. Lett., 104,184503.
*Smith, H. P., and Jeanloz, R., 2010, Britain leads the way to global zero, Arms Control Today, 40, 15-18.
Gleason, A. E., Marquardt, H., Chen, B., Speziale, S., Wu, J., and Jeanloz, R., 2011, Anomalous sound velocities in MgO under non-hydrostatic compression, Geophys. Res. Lett., 38, 10.1029/2010GL045860.
Marquardt, H., Gleason, A., Marquardt, K., Speziale, S., Miyagi, L., Neusser, G., Wenk, H. R., and Jeanloz, R., 2011, Elastic properties of MgO nanocrystals and grain boundaries at high pressures by Brillouin scattering, Phys. Rev. B, 84, 064131.
Arielly, R., Xu, W. M., Greenberg, E., Rozenberg, G. Kh., Pasternak, M. P., Garbarino, G., Clark, S., and Jeanloz, R., 2011, Intriguing sequence of GaFeO3 structures and electronic states to 70 GPa, Phys. Rev. B,84, 094109.
*Drell, S. D., and Jeanloz, R., 2011, Nuclear deterrence in a world without nuclear weapons, in Deterrence, Its Past and Future (G. P. Shultz, S. D. Drell and J.E. Goodby, eds.), Hoover Press, Stanford, CA, pp. 99-129.
Spaulding, D. K., McWilliams, R. S., Jeanloz, R., Eggert, J. H., Celliers, P. M., Hicks, D. G., Collins, G. W., and Smith, R.F., 2012, Evidence for a phase transition in silicate melt at extreme pressure and temperature conditions,Phys. Rev. Lett., 108, 10.1103/PhysRevLett.108.065701.
Millot, M., Geballe, Z. M., Yu, K. M., Walukiewicz, W., and Jeanloz, R., 2012, Red-green luminescence in indium gallium nitride alloys investigated by high pressure spectroscopy, Appl. Phys. Lett., 100, 162103.
Geballe, Z., and Jeanloz, R., 2012, Origin of temperature plateaus in laser-heated diamond anvil cell experiments, J. Appl. Phys., in press.
*Jeanloz, R., 2012, Long-range effects of nuclear disasters, in The Nuclear Enterprise (G. P. Shultz, S. D. Drell and J.E. Goodby, eds.), Hoover Press, Stanford, CA, in press.
Astronomy/EPS C12, The Planets
Letters & Science 16, Age of the Earth
Interdepartmental Studies 24, Freshman Seminar
EPS 100A, Minerals: Cosmic Dust to Gems
EPS 102, History and Evolution of Planet Earth
Physics 105, Analytical Mechanics
EPS 108, Geodynamics
EPS 122, Physics of the Earth and Planetary Interiors
Astronomy/EPS C162, Planetary Astrophysics
EPS 209, Mineral Thermodynamics
EPS 219, Seminar in Geophysics
EPS 220, Advanced Concepts in Mineral Physics
EPS 225, Topics in High-Pressure Research
EPS 300, Professional Preparation
Current Students and Associates (2012)
- Suzanne Ali (Ph.D. Student, Chemistry)
- Zack Geballe (Ph.D. student, Geophysics)
- B. K. Godwal (Senior Researcher, Physics)
- Marius Millot (Postdoctoral Researcher, Physics)
- Henry Tang (Ph.D. student, Chemistry)
Former Students and Associates
- Sofia Akber (Private Sector)
- Robin Benedetti (Lawrence Livermore National Laboratory; Physics)
- Sorin Bodea (General Electric Corporate Offices)
- W. Alexander Caldwell (Private Sector)
- Teresa Dillon (Cornell University; Geological Sciences)
- Nobumasa Funamori (University of Tokyo; Geophysics)
- Laurent Goeb (Private Sector)
- Brent Grocholski (Smithsonian Institution, Earth and Planetary Science)
- Dion L. Heinz (University of Chicago; Geophysical Sciences)
- A. Hope Jahren (Johns Hopkins University; Geological Sciences)
- Mary L. Johnson (Private Sector)
- Abby Kavner (University of California, Los Angelese; Geophysics)
- In Ho Kim (Agency for Defense Development, Korea; Physics)
- Kwang-Joo Kim (Agency for Defense Development, Korea; Physics)
- Elise Knittle (University of California, Santa Cruz; Earth Sciences)
- Michael Kruger (University of Missouri, Kansas City; Physics)
- Chaincy Kuo (Lawrence Berkeley National Laboratory; Seismology)
- Kanani K.M. Lee (Yale; Geophysics)
- Victoria E. Lee (Lamont, Columbia University; Geochemistry)
- Xiaoyuan Li (Private Sector)
- Hongjian Liu (Private Sector)
- Hector A. Lorenzana (Lawrence Livermore National Laboratory; Physics)
- Michael Manga (University of California, Berkeley; Earth and Planetary Science)
- R. Stewart McWilliams (Private Sector)
- Charles Meade (Private Sector)
- Gregory H. Miller (University of California, Davis; Applied Science)
- Wren Montgomery (Imperial College, London; Geochemistry)
- Jeffrey H. Nguyen (Lawrence Livermore National Laboratory; Physics)
- Bridget O'Neill (University of Arizona, Lowell Observatory)
- Wendy Panero (Ohio State University; Geological Sciences)
- Takeo Shibata (Private Sector)
- Dan Shim (Arizona State University; Experimental Geophysics)
- Dylan Spaulding (Harvard University; Planetary Science)
- Sergio Speziale (GFZ, Potsdam; Mineral Physics)
- Lars Strixrude (University College, London; Geophysics)
- Quentin C. Williams (University of California, Santa Cruz; Earth Sciences)
- George H. Wolf (Arizona State University; Chemistry)
- Richeng Yu (Chinese Academy of Sciences; Physics)
PROFESSIONAL EXPERIENCE (Partial Listing; current activities underlined)
Advisor, American Scientist, 1993-01; National Geographic, 1995- ; PhysicsToday, 1996-
American GeophysicalUnion, Tectonophysics Program Chair, 1983; J. Geophysical Research Associate Editor, 1983-86; Mineral & Rock Physics Committee, 1983-88, 1998-02 (Chair, 1998-00); Rev. Geophysics Committee, 1987 (Chair),1990; Lehmann Medal Committee (Chair), 1996-97; Bowie Medal Committee, 2000-02.
American PhysicalSociety, Shock Compression Fellows and Science Award Committees, 2002-04.
Annual Review of Earth and Planetary Sciences, Editorial Committee, 1987-91; Editor, 1996-
Deep Springs College Board of Trustees, 1995-03; Secretary of the Corporation, 1996-01.
Department of Energy, Basic Energy Sciences Earth Science Advisory Council, 1997-04; Subcritical Experiment Evaluation Committee (Chair), 1998-99; Senior Advisor to the Under-Secretary, 1999-2000; National Nuclear Security Administration Advisory Committee (Defense Programs Lead), 2001-03; Executive Committee, High Energy Density Laboratory Physics Workshop, 2009-10; Senior Advisor to the Secretary, 2009, 2010.
ExxonMobil Research and Engineering Corporation, Advisor, 2003-04.
JASON, member (Steering Committee,1998-03).
Lawrence Livermore National Security, LLC, and Los Alamos National Security, LLC, Science and Technology Committee, 2007-
NASA Planetary Geology & Geophysics Management Operations Working Group,1987-94 (Chair, 1989-91); Solid Earth and Natural Hazards Program Steering Committee, 2000-03.
National Academy of Sciences, National Research Council Physics and Chemistry of Earth Materials Committee, 1986-88; Steering Committee, Solid-Earth Sciences: A Critical Assessment, 1988-93; Board on Earth Science sand Resources, 1997-02 (Chair, 1999-02); Basic Research Opportunities in Earth Sciences Committee, 1998-00; Committee on Technical Issues Related to Ratification of the Comprehensive Nuclear Test Ban Treaty, 2000-02; Committee on International Security and Arms Control, 2002- (Chair, 2005- ); Committee on Effects of a Nuclear Earth-Penetrator Weapon, 2004; Search Committee for Science and Technology Adviser to the Secretary of State, 2006-07; Committee to Review and Update Technical Issues Related to Ratification of the CTBT, 2009-12; Committee on Management of the NNSA Laboratories, 2011- .
National Science Foundation Earth Sciences Proposal Review Panel, 1987-91; Earth Sci. Presidential Young Investigator (PYI) Panel, 1988; Continental Dynamics Review Panel, 1988-91; Graduate Research Fellowship Panel, 1997-99; Geosciences Directorate Advisory Committee, 2005-07 (EAR Sub-committee Chair, 2005-07; IF Program Committee of Visitors Chair, 2007).
Physical Review Letters Divisional Associate Editor (adhoc), 1993-
Department of State, Secretary of State's International Security Advisory Board, 2011-
University of California UCB Committee on Academic Policy & Resource Allocation, 1996-98; UC National Security Panel,1998-07; LLNL Nonproliferation, Arms Control, International Security AdvisoryCommittee, 2000-07; LLNL (2002, 2006, 2011) and LANL (2011) Director Screening Committees; UCB Biological Sciences Dean Search (Chair), 2002; UC President’s Council, 2002-07; UCB Committee on Committees, 2007-09; UCB Research Cabinet, 2009- ; UCB Astrophysics Council, 2010- ; LANL LDRD Program Review (Chair), 2011