New hyperbolic statistics for the equilibrium distribution function of interacting electrons
DOI:
https://doi.org/10.24028/gj.v44i6.273643Keywords:
cold plasma, electron distribution function, elliptical functions, atmospheric electronsAbstract
New statistics of a low-parameter distribution of the sech (ε, µ) type are presented, which reproduce the results of plasma simulation by the method of dynamics of many particles (DMP) with high accuracy. The distribution is based on a conceptual model of a two-component plasma — virtual quasiparticles of negative energy (exciton phase ε<0); the scattering region of positive energy (gas phase ε>0). Optimization and elementary estimates of the applicability of the sech (ε, µ) distribution statistics were made after the results of DMP experiments. The sech (ε,µ) distribution reduces the number of parameters of the three-piece DMP distribution from 4 energy diffusion coefficients (D1, D2, D3, D4) to two — the chemical potential µ and the asymmetry coefficient α. The functional relationship D1, D2, D3, D4 with the chemical potential of the system µ in the sech (ε, µ) distribution is introduced in a similar way to the Einstein relation between mobility and energy diffusion constants. The functional variety of the differential equation belongs to the family of elliptic functions. It is much wider than the hyperbolic solution given, which has significant physical application for complex values of the energy ε. The proposed simplified scheme grounded in the physical interpretation of negative energies can be written for the electrometric electrons of the atmosphere, which previously presented significant methodological difficulties. The chemical potentials of the fluid (metastable states) and gas phases are presented as functions of the plasma imperfection parameter. The problem is posed as an application to the problem of electrometric electrons in the atmosphere. The proposed distribution is not represented in mathematical statistics and statistical physics; it is new and extremely relevant.
References
Aghigh, M., Grant, K., Haenel, R, Marroquín, K.L., Martins, F.B.V., Sadegi, H., Schulz-Weilin, M., Sous, J., Wang, R., Keller, J.S., & Grant, E.R. (2020). Dissipative dynamics of atomic and molecular Rydberg gases: Avalanche to ultracold plasma states of strong coupling. Journal of Physics B: Atomic, Molecular and Optical Physics, 53(7), 074003. https://doi.org/10.1088/1361-6455/ab604f.
Anderson, D.A. (2015). Rydberg molecules and circular Rydberg states in cold atom clouds. Doctor of Philosophy (Applied Physics) in the University of Michigan, 157 p.
Maiorov , S.A., Tkachev, A.N., & Yakovlenko, S.I. (1991). Investigation of the fundamental properties of a Coulombian plasma by the method of many-particle dynamics. Soviet Physics Journal, 34(11), 951—976. https://doi.org/10.1007/bf00895472.
Maiorov , S.A., Tkachev, A.N., & Yakovlenko, S.I. (1992). Mathematical models and computer experiment. Unexpected properties of classical coulomb plasma revealed by computer simulation ab initio. Matematicheskoye modelirovaniye, 4(7), 3—30 (in Russian).
Maiorov , S.A., Tkachev, A.N., & Yakovlenko, S.I. (1995). Metastable state of supercooled plasma. Physica Scripta, 51(4), 498—516. https://doi.org/10.1088/0031-8949/51/4/012.
Morrison, J.P., Saquet, N., & Grant, E.R. (2012). Classical scaling and the correspondence between the coupled rate equation and molecular dynamics models for the evolution of ultracold neutral plasma. Journal of Physics B: Atomic, Molecular and Optical Physics, 45(2), 025701. https://doi.org/10.1088/0953-4075/45/2/025701.
Tkachev, A.N., & Yakovlenko, S.I. (1993). Reasons for the slowing of recombination in a plasma bubble produced during irradiation of a target with a pulse from a XeCl laser. Quantum Electronics, 23(2), 91—92. https://doi.org/10.1070/QE1993v023n02ABEH002947.
Tkachev, A.N., & Yakovlenko, S.I. (2001). Relaxation of Rydberg states in an ultracold plasma. Quantum Electron, 31(12), 1084—1088. https://doi.org/10.1070/QE2001v031n12ABEH002111.
Tkachev, A.N., & Yakovlenko, S.I. (1997). Stochastic perturbation and relaxation of a classical Coulomb plasma. Technical Physics Letters, 23(9), 686—689. https://doi.org/10.1134/1.1261656.
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