Zoë C. Long
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Zoë C. Long has a total of 27 co-authors. Here are the top co-authors by number of shared publications:
- Christine Jiang Wu
Lawrence Livermore National Laboratory
2 shared publications Andrew Lopez
Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
1 shared publication- Carrie J. Prisbrey
Lawrence Livermore National Laboratory , Livermore, California 94550
1 shared publication D. Braun
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94500, USA
1 shared publicationD. C. Swift
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94500, USA
1 shared publicationD. E. Fratanduono
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94500, USA
1 shared publication
Latest Publications
- 18 October 2023
- Published by American Physical Society (APS) in Physical Review B
- Vol. 108 (13) , 134202
Fluid-phase helium: Shock-compression experiments, quantum molecular dynamics simulations, and development of an equation of state
Helium (He) plays a critical role in numerous areas ranging from the study of celestial objects like brown dwarfs and gas giants to modern-day technologies like nuclear energy and rocket propulsion. For many of these applications, it is essential to have a reliable equation of state (EOS) for He that yields an accurate representation of its thermodynamic behavior. To help constrain and develop such EOS models, we have performed a series of shock-compression experiments on cryogenic liquid He to pressures exceeding 100 GPa using a magnetically accelerated flyer plate on Sandia National Laboratories' Z-machine. We have also performed quantum molecular dynamics simulations that are consistent with our shock measurements. None of the previously available EOSs agree with our experimental and simulation results, motivating the development of a fluid-phase He EOS that we present in this study. We show that our EOS yields good agreement with published data that span temperatures and pressures encountered across a diverse array of applications.
- 18 October 2023
- Published by American Physical Society (APS) in Physical Review B
- Vol. 108 (13) , 134202
Fluid-phase helium: Shock-compression experiments, quantum molecular dynamics simulations, and development of an equation of state
Helium (He) plays a critical role in numerous areas ranging from the study of celestial objects like brown dwarfs and gas giants to modern-day technologies like nuclear energy and rocket propulsion. For many of these applications, it is essential to have a reliable equation of state (EOS) for He that yields an accurate representation of its thermodynamic behavior. To help constrain and develop such EOS models, we have performed a series of shock-compression experiments on cryogenic liquid He to pressures exceeding 100 GPa using a magnetically accelerated flyer plate on Sandia National Laboratories' Z-machine. We have also performed quantum molecular dynamics simulations that are consistent with our shock measurements. None of the previously available EOSs agree with our experimental and simulation results, motivating the development of a fluid-phase He EOS that we present in this study. We show that our EOS yields good agreement with published data that span temperatures and pressures encountered across a diverse array of applications.
- 27 January 2023
- Published by American Physical Society (APS) in Physical Review B
- Vol. 107 (1) , 014109
Ramp compression of tantalum to multiterapascal pressures: Constraints of the thermal equation of state to 2.3 TPa and 5000 K
We report measurements of the compressibility of ramp compressed tantalum to a final stress of 2.3 TPa corresponding to threefold volumetric compression. Using these data, we extended the experimental constraint on the Ta cold compression curve by an order of magnitude in pressure. By combining the resulting data with previous measurements of shock compression and ambient pressure heating, we construct an experimentally bounded and thermodynamically consistent equation of state model for Ta which has 2% uncertainty in pressure at 1 TPa. We therefore propose Ta as an in situ pressure scale for laser-heated static compression experiments which were recently able to reach terapascal pressures and thousands of degrees Kelvin. Our new equation of state of Ta is experimentally constrained at extreme pressures and temperatures relevant to a wide range of planetary interiors and will allow for more accurate comparison between experimental measurements and theory at extreme conditions.
- 27 January 2023
- Published by American Physical Society (APS) in Physical Review B
- Vol. 107 (1) , 014109
Ramp compression of tantalum to multiterapascal pressures: Constraints of the thermal equation of state to 2.3 TPa and 5000 K
We report measurements of the compressibility of ramp compressed tantalum to a final stress of 2.3 TPa corresponding to threefold volumetric compression. Using these data, we extended the experimental constraint on the Ta cold compression curve by an order of magnitude in pressure. By combining the resulting data with previous measurements of shock compression and ambient pressure heating, we construct an experimentally bounded and thermodynamically consistent equation of state model for Ta which has 2% uncertainty in pressure at 1 TPa. We therefore propose Ta as an in situ pressure scale for laser-heated static compression experiments which were recently able to reach terapascal pressures and thousands of degrees Kelvin. Our new equation of state of Ta is experimentally constrained at extreme pressures and temperatures relevant to a wide range of planetary interiors and will allow for more accurate comparison between experimental measurements and theory at extreme conditions.