867 research outputs found
Molecular Dynamics Simulations of Temperature Equilibration in Dense Hydrogen
The temperature equilibration rate in dense hydrogen (for both T_{i}>T_{e}
and T_i<T_e) has been calculated with molecular dynamics simulations for
temperatures between 10 and 600 eV and densities between 10^{20}/cc to
10^{24}/cc. Careful attention has been devoted to convergence of the
simulations, including the role of semiclassical potentials. We find that for
Coulomb logarithms L>1, a model by Gericke-Murillo-Schlanges (GMS) [Gericke et
al., PRE 65, 036418 (2002)] based on a T-matrix method and the approach by
Brown-Preston-Singleton [Brown et al., Phys. Rep. 410, 237 (2005)] agrees with
the simulation data to within the error bars of the simulation. For smaller
Coulomb logarithms, the GMS model is consistent with the simulation results.
Landau-Spitzer models are consistent with the simulation data for L>4
State of the Art and Future Challenges in Multiple Sclerosis Research and Medical Management: An Insight into the 5th International Porto Congress of Multiple Sclerosis
The 5th International Porto Congress of Multiple Sclerosis took place between the 14th and 16th of February 2019 in Porto, Portugal. Its intensive programme covered a wide-range of themes—including many of the hot topics, challenges, pitfalls and yet unmet needs in the field of multiple sclerosis (MS)—led by a number of well-acknowledged world experts. This meeting review summarizes the talks that took place during the congress, which focussed on issues in MS as diverse as the development and challenges of progressive MS, epidemiology, differential diagnosis, medical management, molecular research and imaging tools
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