Time evolution of cylindrical and spherical shock waves in an ultracold neutral plasma with non-Maxwellian electrons
International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr-University Bochum - D-44780 Bochum, Germany, EU
2 Department of Physics, Jahangirnagar University - Savar, Dhaka 1342, Bangladesh
Accepted: 2 November 2011
Properties of non-planar (cylindrical and spherical) shock waves in an ultracold neutral (UCN) plasma are analyzed by using the generalized hydrodynamic model for ions and non-Maxwellian electron distribution functions. For this purpose, non-planar modified Burgers equations have been derived and their numerical solutions are presented. The ion-acoustic shock waves, as predicted here, may be associated with nonlinear structures in the forthcoming laboratory UCN plasma experiments.
PACS: 52.35.Tc – Shock waves and discontinuities / 52.35.Fp – Electrostatic waves and oscillations (e.g., ion-acoustic waves) / 52.27.Gr – Strongly-coupled plasmas
© EPLA, 2011