S
S. Rothman
Researcher at Atomic Weapons Establishment
Publications - 11
Citations - 434
S. Rothman is an academic researcher from Atomic Weapons Establishment. The author has contributed to research in topics: Phase (matter) & Phase transition. The author has an hindex of 10, co-authored 11 publications receiving 369 citations.
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Journal ArticleDOI
The strength of single crystal copper under uniaxial shock compression at 100 GPa
William J. Murphy,Andrew Higginbotham,Giles Kimminau,B. Barbrel,Eduardo M. Bringa,James Hawreliak,Ryosuke Kodama,M. Koenig,W McBarron,Marc A. Meyers,Bob Nagler,Norimasa Ozaki,Nigel Park,Bruce Remington,S. Rothman,Sam Vinko,T. Whitcher,Justin Wark +17 more
TL;DR: It is inferred, using molecular dynamics simulations and VISAR (standing for 'velocity interferometer system for any reflector') measurements, that the strength of the material increases dramatically (to approximately 1 GPa) for these extreme strain rates.
Journal ArticleDOI
In situ x-ray diffraction measurements of the c/a ratio in the high-pressure ε phase of shock-compressed polycrystalline iron
James Hawreliak,Bassem S. El-Dasher,Hector Lorenzana,Giles Kimminau,Andrew Higginbotham,Bob Nagler,Sam Vinko,William J. Murphy,T. Whitcher,Justin Wark,S. Rothman,Nigel Park +11 more
TL;DR: In this paper, the structure of laser-shock-compressed polycrystalline iron was probed using in situ x-ray diffraction over a pressure range spanning the $\ensuremath{\alpha}$-$\ensuremath{\epsilon}$ phase transition.
Journal ArticleDOI
Strength of shock-loaded single-crystal tantalum [100] determined using in situ broadband x-ray Laue diffraction.
A. J. Comley,A. J. Comley,Brian Maddox,Robert E. Rudd,Shon Prisbrey,James Hawreliak,Daniel Orlikowski,S. C. Peterson,Joe H. Satcher,A. J. Elsholz,H.-S. Park,Bruce Remington,N. Bazin,John Foster,P. Graham,Nigel Park,Paula Rosen,S. Rothman,Andrew Higginbotham,Matthew Suggit,Justin Wark +20 more
TL;DR: The strength of shock-loaded single crystal tantalum has been experimentally determined using in situ broadband x-ray Laue diffraction to measure the strain state of the compressed crystal, and elastic constants calculated from first principles in excellent agreement with a multiscale strength model.
Journal ArticleDOI
Probing matter at Gbar pressures at the NIF
Andrea Kritcher,Tilo Döppner,Damian Swift,James Hawreliak,Gilbert Collins,Joseph Nilsen,Benjamin Bachmann,E. L. Dewald,David Strozzi,S. Felker,O. L. Landen,O. S. Jones,Cliff Thomas,J. H. Hammer,Christopher J. Keane,Hyesog Lee,S. H. Glenzer,S. Rothman,D. Chapman,Dominik Kraus,Paul Neumayer,Roger Falcone +21 more
TL;DR: In this article, the authors describe a platform to measure the material properties, specifically the equation of state and electron temperature, at pressures of 100 Mbar to a Gbar at the National Ignition Facility (NIF).
Journal ArticleDOI
Ultrafast X-Ray Diffraction Studies of the Phase Transitions and Equation of State of Scandium Shock Compressed to 82 GPa.
Richard Briggs,M. G. Gorman,A. L. Coleman,R. S. McWilliams,Emma McBride,David McGonegle,Justin Wark,L. J. Peacock,S. Rothman,S. G. MacLeod,Cynthia Bolme,Arianna Gleason,Gilbert Collins,Jon Eggert,Dayne Fratanduono,R. F. Smith,Eric Galtier,Eduardo Granados,Hae Ja Lee,Bob Nagler,Inhyuk Nam,Zhou Xing,Malcolm McMahon +22 more
TL;DR: X-ray diffraction at the Linac Coherent Light Source x-ray free-electron laser has determined simultaneously and self-consistently the phase transitions and equation of state (EOS) of the lightest transition metal, scandium, under shock compression.