Publications by Stewart McWilliams

Metrology for femtosecond pulsed x-ray heating in diamond anvil cell experiments at the European XFEL: Revisiting the iron phase diagram up to 150 GPa DOI
Helene Ginestet, Rachel J Husband, Nicolas Jaisle, Eric Edmund, Zuzana Konopkova, Cornelius Strohm, Madden S. Anae, Daniele Antonangeli, Karen Appel, Orianna Ball, Bernhard Massani, James D. McHardy, Malcolm I. McMahon, R. Stewart McWilliams et al., Journal of applied physics, 139, 4, p. 1-22 (2026)
X-ray thermal diffuse scattering as a texture-robust temperature diagnostic for dynamically compressed solids DOI
P. G. Heighway, D. J. Peake, T. Stevens, J. S. Wark, B. Albertazzi, S. J. Ali, L. Antonelli, M. R. Armstrong, C. Baehtz, O. B. Ball, B. Massani, J. D. McHardy, R. S. McWilliams, M. I. McMahon et al., Journal of applied physics, 138, 15, p. 1-23 (2025)
Synthesis of Gold Hydride at High Pressure and High Temperature DOI
Mungo Frost, Kilian Abraham, Alexander F. Goncharov, R. Stewart Mcwilliams, Rachel J. Husband, Michal Andrzejewski, Karen Appel, Carsten Baehtz, Armin Bergermann, Danielle Brown et al., Angewandte Chemie International Edition, 64, 38, p. 1-8 (2025)
Calibration and characterization of the line-VISAR diagnostic at the HED-HIBEF instrument at the European XFEL DOI
A. Descamps, T. M. Hutchinson, R. Briggs, E. E. Mcbride, M. Millot, T. Michelat, J. H. Eggert, B. Albertazzi, L. Antonelli, O. B. Ball, B. Massani, J. D. McHardy, R. S. Mcwilliams, M. I. McMahon et al., Review of Scientific Instruments, 96, 7, p. 1-18 (2025)
The structure of liquid carbon elucidated by in situ X-ray diffraction DOI
D. Kraus, J. Rips, M. Schörner, M. G. Stevenson, J. Vorberger, D. Ranjan, J. Lütgert, B. Heuser, J. H. Eggert, R. S. McWilliams, M. I. McMahon et al., Nature, 642, p. 351-355 (2025)
Femtosecond temperature measurements of laser-shocked copper deduced from the intensity of the x-ray thermal diffuse scattering DOI
J. S. Wark, D. J. Peake, T. Stevens, P. G. Heighway, Y. Ping, P. Sterne, B. Albertazzi, S. J. Ali, L. Antonelli, R. S. McWilliams, M. I. McMahon et al., Journal of applied physics, 137, 15, p. 1-17 (2025)
X-ray phase contrast imaging and diffraction in the laser-heated diamond anvil cell: A case study on the high-pressure melting of Pt DOI
Emma Ehrenreich-Petersen, Bernhard Massani, Thea Engler, Olivia S. Pardo, Konstantin Glazyrin, Nico Giordano, Johannes Hagemann, Daniel Sneed, Timofey Fedotenko, Daniel J. Campbell, R. Stewart McWilliams et al., Results in Physics, 69, p. 1-9 (2025)
Phase transition kinetics of superionic H2O ice phases revealed by Megahertz X-ray free-electron laser-heating experiments DOI
R. J. Husband, H. P. Liermann, J. D. McHardy, R. S. McWilliams, A. F. Goncharov, V. B. Prakapenka, E. Edmund, S. Chariton, Z. Konôpková, C. Strohm, M. I. McMahon et al., Nature Communications, 15, 1, p. 1-13 (2024)
Measurement bias in self-heating x-ray free electron laser experiments from diffraction studies of phase transformation in titanium DOI
OB Ball, RJ Husband, JD McHardy, MI McMahon, C Strohm, Z Konôpková, K Appel, V Cerantola, AL Coleman, H Cynn, RS McWilliams et al., Journal of applied physics, 136, 11, p. 1-12 (2024)
High-Pressure Synthesis of Ultra-Incompressible, Hard and Superconducting Tungsten Nitrides DOI
Akun Liang, Israel Osmond, Georg Krach, Lan Ting Shi, Lukas Brüning, Umbertoluca Ranieri, James Spender, Ferenc Tasnadi, Bernhard Massani, Callum R. Stevens, Ryan Stewart McWilliams, Eugene Gregoryanz, Andrew Huxley, Miriam Peña-Alvarez, Dominique Laniel et al., Advanced Functional Materials, 34, 32, p. 1-12 (2024)
The Thermal Conductivity of Bridgmanite at Lower Mantle Conditions Using a Multi-Technique Approach DOI
Eric Edmund, Irina Chuvashova, Zuzana Konopkova, Rachel Husband, Cornelius Strohm, Karen Appel, Carsten Baehtz, Orianna Ball, Victorien Bouffetier, Kara Brugman, James McHardy, Malcolm McMahon, R. Stewart McWilliams et al., Journal of Geophysical Research. Solid Earth, 129, 6, p. 1-9 (2024)
Shock compression experiments using the DiPOLE 100-X laser on the high energy density instrument at the European x-ray free electron laser: Quantitative structural analysis of liquid Sn DOI
MG Gorman, D McGonegle, RF Smith, S Singh, T Jenkins, RS McWilliams, B Albertazzi, SJ Ali, L Antonelli, MR Armstrong, MI McMahon et al., Journal of applied physics, 135, 16, p. 1-11 (2024)
Simple Molecules under High-Pressure and High-Temperature Conditions: Synthesis and Characterization of α- and β-C(NH)2 with Fully sp3-Hybridized Carbon DOI
Thaddaus J. Koller, Siyu Jin, Viktoria Krol, Sebastian J. Ambach, Umbertoluca Ranieri, Saiana Khandarkhaeva, James Spender, Stewart McWilliams, Florian Trybel, Nico Giordano, Andreas Hermann, Dominique Laniel et al., Angewandte Chemie, 63, 7, p. 1-6 (2024)
Diamond Precipitation Dynamics from Hydrocarbons at Icy Planet Interior Conditions DOI
Mungo Frost, R Stewart McWilliams, Elena Bykova, Maxim Bykov, Rachel J Husband, Leon M Andriambariarijaona, Saiana Khandarkhaeva, Bernhard Massani, Karen Appel, Carsten Baehtz, Malcolm I McMahon et al., Nature Astronomy, 8, 2, p. 174-181 (2024)
Simultaneous bright- and dark-field X-ray microscopy at X-ray free electron lasers DOI
Leora E. Dresselhaus-Marais, Bernard Kozioziemski, Theodor S. Holstad, Trygve Magnus Ræder, Matthew Seaberg, Daewoong Nam, Sangsoo Kim, Sean Breckling, Sungwook Choi, R. Stewart McWilliams et al., Scientific Reports, 13, 1, p. 1-19 (2023)
MHz free electron laser x-ray diffraction and modeling of pulsed laser heated diamond anvil cell DOI
Nicolas Jaisle, David Cebron, Zuzana Konopkova, Rachel J. Husband, Clemens Prescher, Valerio Cerantola, Anand Dwivedi, Johannes M. Kaa, Karen Appel, Orianna B. Ball, Ryan S. Mcwilliams, James D. McHardy, Malcolm I. Mcmahon et al., Journal of applied physics, 134, 9, p. 1-19 (2023)
Dynamic Optical Spectroscopy and Pyrometry under Optical and X-ray Laser Heating at European XFEL DOI
EuXFEL Community, Journal of applied physics, 134, 5, p. 1-38 (2023)
A MHz X-ray diffraction set-up for dynamic compression experiments in the diamond anvil cell DOI
EuXFEL Community Proposal 2592, Journal of Synchrotron Radiation, 30, Pt 4, p. 671-685 (2023)
Atomistic investigation of cavitation and ablation in tantalum foils under irradiation with x-rays approaching 5 keV DOI
M.J. Duff, P.G. Heighway, J.D. McHardy, A. D'Souza, R. S. McWilliams, J.S. Wark and M. I. McMahon, Physical Review B, 106, 2, p. 1-23 (2022)
X-ray free electron laser heating of water and gold at high static pressure DOI
Rachel J. Husband, R. Stewart McWilliams, Edward J. Pace, Amy L. Coleman, Huijeong Hwang, Jinhyuk Choi, Taehyun Kim, Gil Chan Hwang, Orianna B. Ball, Sae Hwan Chun, Malcolm, I McMahon et al., Communications Materials, 2, 1, p. 1-9 (2021)
Novel experimental setup for MHz X-ray diffraction in the Diamond Anvil Cell at the High Energy Density (HED) Instrument of the European X-ray Free Electron Laser DOI
EuXFEL Community, J D McHardy, M. I. McMahon, R. S. McWilliams, O B Ball and E J Pace, Journal of Synchrotron Radiation, 28, 3, p. 1-19 (2021)
X-ray Free Electron Laser-Induced Synthesis of ε- Iron Nitride at High Pressures DOI
EuXFEL Community, Orianna Ball, James D McHardy, Edward J Pace, Malcolm I McMahon and R Stewart McWilliams, The Journal of Physical Chemistry Letters, 12, 12, p. 3246-3252 (2021)
Shock-wave study of the metallization of alkali halides up to 400 GPa DOI
Orianna Ball, Matthew R. Diamond, Suzanne J. Ali, Raymond Jeanloz, Jon H. Eggert, Gilbert W. Collins and R. S. McWilliams, AIP Conference Proceedings, 2272, 1, p. 1-6 (2020)
Thermomechanical response of thickly tamped targets and diamond anvil cells under pulsed hard x-ray irradiation DOI
J. Meza-Galvez, N. Gomez-Perez, A. Marshall, A. L. Coleman, K. Appel, H. P. Liermann, M. I. McMahon, Z. Konopkova and R. S. McWilliams, Journal of applied physics, 127, 19 (2020)
Viscosity measurement from microscale convection at high pressure and temperature DOI
Hannah Bartlett, Natalia Gomez-Perez, Michiel Hermes and Stewart Mcwilliams, Physical review B, 101, 14 (2020)
Intense Reactivity in Sulfur-Hydrogen Mixtures at High Pressure under X-ray Irradiation DOI
Ed Pace, Amy L Coleman, Rachel J Husband, Huijeong Hwang, Jinhyuk Choi, Taehyun Kim, Gilchan Hwang, Sae Hwan Chun, Daewoong Nam, Malcolm McMahon, Stewart Mcwilliams et al., Journal of Physical Chemistry Letters (2020)
A spectroscopic study of the insulator-metal transition in liquid hydrogen and deuterium DOI
Shuqing Jiang, Nicholas Holtgrewe, Zachary M Geballe, Sergey S Lobanov, Mohammad F. Mahmood, Ryan Mcwilliams and Alexander F. Goncharov, Advanced Science (2019)
Identification of Phase Transitions and Metastability in Dynamically Compressed Antimony using Ultra-Fast X-Ray Diraction DOI
Amy Coleman, M. G. Gorman, Richard Briggs, Ryan Mcwilliams, David McGonegle, C A Bolme, A E Gleason, D. E. Fratanduono, R. F. Smith, Eric Galtier, Malcolm McMahon et al., Physical Review Letters (2019)
Recovery of Metastable Dense Bi Synthesized by Shock Compression DOI
M. G. Gorman, Amy Coleman, Richard Briggs, Ryan Mcwilliams, Andreas Hermann, David McGonegle, C A Bolme, A E Gleason, Eric Galtier, H. J. Lee, E Granados, Malcolm McMahon et al., Applied Physics Letters (2019)
Femtosecond diffraction studies of solid and liquid phase changes in shock-compressed bismuth DOI
M. G. Gorman, Amy Coleman, Richard Briggs, Ryan Mcwilliams, David McGonegle, C A Bolme, A E Gleason, Eric Galtier, H. J. Lee, E Granados, Malcolm McMahon et al., Scientific Reports, 8 (2018)
Insulator-metal transition in dense fluid deuterium DOI
Peter M. Celliers, Marius Millot, Stephanie Brygoo, R. Stewart McWilliams, Dayne E. Fratanduono, J. Ryan Rygg, Alexander F. Goncharov, Paul Loubeyre, Jon H. Eggert, J. Luc Peterson et al., Science, 361, 6403, p. 677-682 (2018)
Metallization and molecular dissociation of dense fluid nitrogen DOI
R. Stewart McWilliams, Nature Communications, 9 (2018)
Finite element modeling of melting and fluid flow in the laser-heated diamond-anvil DOI
Natalia Gomez-Perez, John Rodriguez and Ryan Mcwilliams, Journal of applied physics, 121, p. 145904-1 (2017)
Ultrafast X-Ray Diffraction Studies of the Phase Transitions and Equation of State of Scandium Shock Compressed to 82 GPa DOI
R Briggs, M G Gorman, A L Coleman, R S McWilliams, E E McBride, D McGonegle, J S Wark, L Peacock, S Rothman, S G Macleod, M I McMahon et al., Physical Review Letters, 118, 2, p. 1-6 (2017)
Optical properties of fluid hydrogen at the transition to a conducting state DOI
R. Stewart McWilliams, D. Allen Dalton, Mohammad F. Mahmood and Alexander F. Goncharov, Physical Review Letters, 116, 25 (2016)
Direct measurement of thermal conductivity in solid iron at planetary core conditions DOI
Zuzana Konôpková, R. Stewart McWilliams, Natalia Gomez-Perez and Alexander F. Goncharov, Nature, 534, 7605, p. 99-101 (2016)
Opacity and conductivity measurements in noble gases at conditions of planetary and stellar interiors DOI
R. Stewart Mcwilliams, D. Allen Dalton, Zuzana Konopkova, Mohammad F. Mahmood and Alexander F. Goncharov, Proceedings of the National Academy of Sciences (PNAS), 112, 26, p. 201421801 (2015)
A flash heating method for measuring thermal conductivity at high pressure and temperature: application to Pt DOI
Stewart Mcwilliams, Z. Konopkova and Alexander.f. Goncharov, Physics of the Earth and Planetary Interiors (2015)
Phase Transformations and Metallization of Magnesium Oxide at High Pressure and Temperature DOI
R. S. Mcwilliams, D. K. Spaulding, J. H. Eggert, P. M. Celliers, D. G. Hicks, R. F. Smith, G. W. Collins and R. Jeanloz, Science, 338, 6112, p. 1330-1333 (2012)
Melting and dissociation of ammonia at high pressure and high temperature DOI
J. G. O. Ojwang, R. Stewart McWilliams, Xuezhi Ke and Alexander F. Goncharov, The Journal of Chemical Physics, 137, 6 (2012)
Structural and chemical properties of the nitrogen-rich energetic material triaminoguanidinium 1-methyl-5-nitriminotetrazolate under pressure DOI
R. Stewart McWilliams, Yasmin Kadry, Mohammad F. Mahmood, Alexander F. Goncharov and Jennifer Ciezak-Jenkins, The Journal of Chemical Physics, 137, 5 (2012)
Evidence for a Phase Transition in Silicate Melt at Extreme Pressure and Temperature Conditions DOI
D. K. Spaulding, R. S. McWilliams, R. Jeanloz, J. H. Eggert, P. M. Celliers, D. G. Hicks, G. W. Collins and R. F. Smith, Physical Review Letters, 108, 6 (2012)
Development of ultrafast spectroscopic techniques to study rapid chemical and physical changes in materials under extreme pressure and temperature conditions DOI
Alexander F. Goncharov, D.A. Dalton, Stewart Mcwilliams and Mohammad F. Mahmood, MRS Proceedings, Materials Research Society, 1405 (2012)
Insulator-to-Conducting Transition in Dense Fluid Helium DOI
P. M. Celliers, P. Loubeyre, J. H. Eggert, S. Brygoo, R. S. Mcwilliams, D. G. Hicks, T. R. Boehly, R. Jeanloz and G. W. Collins, Physical Review Letters, 104, 18 (2010)
Melting temperature of diamond at ultrahigh pressure DOI
J. H. Eggert, D. G. Hicks, P. M. Celliers, D. K. Bradley, R. S. Mcwilliams, R. Jeanloz, J. E. Miller, T. R. Boehly and G. W. Collins, Nature Physics, 6, 1, p. 40-43 (2010)
Strength effects in diamond under shock compression from 0.1 to 1 TPa DOI
R. S. McWilliams, J. H. Eggert, D. G. Hicks, D. K. Bradley, P. M. Celliers, D. K. Spaulding, T. R. Boehly, G. W. Collins and R. Jeanloz, Physical review B, 81, 1 (2010)
High-precision measurements of the diamond Hugoniot in and above the melt region DOI
D. G. Hicks, T. R. Boehly, P. M. Celliers, D. K. Bradley, J. H. Eggert, R. S. McWilliams, R. Jeanloz and G. W. Collins, Physical review B, 78, 17 (2008)
Hugoniot Data for Helium in the Ionization Regime DOI
J. Eggert, S. Brygoo, P. Loubeyre, R. S. Mcwilliams, P. M. Celliers, D. G. Hicks, T. R. Boehly, R. Jeanloz and G. W. Collins, Physical Review Letters, 100, 12 (2008)
Achieving high-density states through shock-wave loading of precompressed samples DOI
Raymond Jeanloz, Peter M. Celliers, Gilbert W. Collins, Jon H. Eggert, Kanani K. M. Lee, R. Stewart McWilliams, Stephanie Brygoo and Paul Loubeyre, Proceedings of the National Academy of Sciences (PNAS), 104, 22, p. 9172-9177 (2007)
New optical diagnostics for equation of state experiments on the Janus laser
D. K. Spaulding, D. G. Hicks, R. F. Smith, J. H. Eggert, R. S. McWilliams, G. W. Collins and R. Jeanloz, SHOCK COMPRESSION OF CONDENSED MATTER - 2007, PTS 1 AND 2, American Institute of Physics, p. 1071-1074 (2007)

Menu

Publications by Stewart McWilliams