Practical Improvements to the Lee-More Conductivity Near the Metal-Insulator Transition
- Sandia National Laboratories
The wide-range conductivity model of Lee and More is modified to allow better agreement with recent experimental data and theories for dense plasmas in the metal-insulator transition regime. Modifications primarily include a new ionization equilibrium model, consisting of a smooth blend between single ionization Saha (with a pressure ionization correction) and the generic Thomas-Fermi ionization equilibrium, a more accurate treatment of electron-neutral collisions using a polarization potential, and an empirical modification to the minimum allowed collision time. These simple modifications to the Lee-More algorithm permit a more accurate modeling of the physics near the metal-insulator transition, while preserving the generic Lee-More results elsewhere.
- Research Organization:
- Sandia National Labs., Albuquerque, NM, and Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 762116
- Report Number(s):
- SAND2000-2253J
- Journal Information:
- Plasma Physics, Journal Name: Plasma Physics
- Country of Publication:
- United States
- Language:
- English
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