Lawrence Livermore National Laboratory



William Evans

Associate Division Leader, Condensed Matter Science Section
Physics Division


 +1 925-424-3356


Biography

William Evans' research covers a broad range of subjects aimed at understanding the physics and chemistry of materials under high-pressure/temperature conditions. These activities include investigation of kinetic processes and phase transformations in molecular solids and metals; characterization of metals and molecular solids under high-pressure/temperature conditions; synthesis and characterization of novel technological materials. An area of particular emphasis is novel phases of hydrogen and hydrides.

His experimental activities involve several techniques such as ultrahigh-pressure diamond anvil cell work and associated diagnostics; micro-optical probing techniques such as Raman spectroscopy, visible absorption/transmission, and IR spectroscopy; X-ray scattering - diffraction and spectroscopy (inelastic scattering techniques). William has been working at LLNL since 1995. He received his B.Sc. (Physics) from the California Institute of Technology and his S.M and Ph.D. (Applied Physics) from Harvard University. He is a member of the American Physical Society, American Chemical Society, Optical Society of America, Tau Beta Pi Honors Society, and often serves as a science fair judge.

Selected Publications

  1. W.J. Evans, M.J. Lipp, H. Cynn, et al., "X Ray Diffraction and Raman Studies of Beryllium: Static and Elastic Properties at High Pressures", Phys. Rev. B 72, 94113 (2005) [pdf]
  2. Lipp, MJ; Evans, WJ; Yoo, CS, "Cryogenic loading of large volume presses for high pressure experimentation and synthesis of novel materials", Rev. Sci. Instrum. 76, 053903 (2005) [pdf]
  3. Magnus J. Lipp; William J. Evans; Bruce J. Baer, et al. "High energy density extended CO solid", Nat. Mater. 4, 211 215 (2005) [pdf]
  4. H.E. Lorenzana, M.J. Lipp, and W.J. Evans, "Anomalous Molecular Phase of Nitrogen: Implications to the Phase Diagram", International Journal of High Pressure Research 22(1), 5-8 (2002) [pdf]
  5. H.E. Lorenzana, M.J. Lipp, W.J. Evans, N. Hemmi, "Vibrational Spectroscopy at High Pressures in CF4: Implications to the Phase Diagram", Journal of Low Temperature Physics 122(3/4), 279-290 (2001) [pdf]
  6. W.J. Evans, and I.F. Silvera, “The Index of Refraction, Polarizability and Equation of State of Solid Molecular Hydrogen”, Physical Review B 57(22), 14105-14109 [pdf] (1998)
  7. M.J. Lipp, W.J. Evans, V. Garcia Baonza, and H.E. Lorenzana, “Carbon Monoxide: Spectroscopic Characterization of the High-Pressure Polymerized Phase”, Journal of Low Temperature Physics 111(3/4), 247-256 (1998) [pdf]
  8. M.J. Lipp, V. Garcia Baonza, W.J. Evans, and H.E. Lorenzana, “Nanocrystalline diamond: study of confinement, pressure, and heating effects on phonon modes”, Physical Review B 56(10), 5978-84 (1997) [pdf]
  9. A. Garcia, M.L. Cohen, J.H. Eggert, F. Moshary, W.J. Evans, K.A. Goettel, and I.F. Silvera, "Dielectric Properties of Solid Molecular Hydrogen at High Pressure", Physical Review B 45(17), 9709 (1992) [pdf]

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