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James Sadler

Postdoc
T-2/CNLS

High Energy Density Plasma Physics

James Sadler

Office: TA-3, Bldg 123, Room 205
Mail Stop:
Phone: 505-557-7911
Fax:

james4sadler@lanl.gov
home page

Research highlight
    My work investigates the use of the world’s highest power laser systems to create plasma, often with conditions similar to that at the center of the sun. For a split second, these lasers have a power that far exceeds the entire world’s electricity grid. For example, the National Ignition Facility at LLNL is used to heat plasma to over 50 million Kelvin, such that fusion reactions occur. Eventually, this could be a source of clean electricity. Until then, laser plasma experiments are useful for studying matter in extreme states, as well as other applications such as particle acceleration and neutron sources. My work also focusses on the role of magnetic fields in the plasma dynamics. Although classical equations often describe plasma well, their highly coupled nature involves the use of large scale nonlinear simulations with fluid and particle codes.
 Educational Background/Employment:
  • Postdoctoral research, LANL, (Dec 2018-Present)
  • Postdoctoral researcher, University of Oxford, (Apr 2018 – Oct 2018)
  • PhD degree, University of Oxford, Advisor: Peter Norreys, (Oct 2014 – Apr 2018)
  • Undergraduate tutor, University of Oxford, (Oct 2015 – Apr 2018)
  • Undergraduate Master of Physics degree, University of Oxford, (Oct 2010 – Apr 2014)

Research Interests:

  • High power laser plasma interactions.
  • Magneto-hydrodynamics in high energy density plasmas.
  • Acceleration of electrons using laser wakefields.
  • Kinetic particle-in-cell simulations.

Selected Recent Publications:

  1. James D. Sadler, Christopher A. Walsh and Hui Li, "Symmetric set of transport coefficients for collisional magnetized plasma", Physical Review Letters (Submitted)
  2. James D. Sadler and Hui Li, "Thermomagnetic instability of plasma composition gradients", Physics of Plasmas (Submitted)
  3. James D. Sadler, Hui Li and Kirk A. Flippo, "Magnetic field generation from composition gradients in inertial confinement fusion fuel", Philosophical Transactions of the Royal Society A (2020)
  4. James D. Sadler, Hui Li and Brian M. Haines, "Magnetization around mix jets entering inertial confinement fusion fuel", Physics of Plasmas 27 (2020)
  5. J. D. Sadler, C. Arran, H. Li and K. A. Flippo, "Overcoming the dephasing limit in multiple-pulse laser wakefield acceleration", Physical Review Accelerators and Beams 23 (2020)
  6. J. D. Sadler et al., "Kinetic simulations of fusion ignition with hot-spot ablator mix", Physical Review E (2019)
  7. J. D. Sadler et al., "Advantages to a diverging Raman amplifier", Nature Communications Physics 1 (2018)
  8. J. D. Sadler et al., "Optimization of plasma amplifiers", Physical Review E (2017)
  9. J. D. Sadler et al., "Robustness of Raman plasma amplifiers and their potential for attosecond pulse generation”, High Energy Density Physics 23 (2017)
  10. J. D. Sadler et al., "Compression of X-ray Free Electron Laser Pulses to Attosecond Duration", Nature Scientific Reports 5 (2015)
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