Results 1 to 10 of about 1,842 (116)
Kappa Distributions and Isotropic Turbulence [PDF]
Entropy, 2019 In this work, the two-point probability density function (PDF) for the velocity field of isotropic turbulence is modeled using the kappa distribution and the concept of superstatistics.
Elias Gravanis +3 more
doaj +3 more sources
Olbert’s Kappa Fermi and Bose Distributions [PDF]
Frontiers in Physics, 2021 The quantum version of Olbert’s kappa distribution applicable to fermions is obtained. Its construction is straightforward but requires recognition of the differences in the nature of states separated by Fermi momenta. Its complement, the bosonic version
R. A. Treumann +2 more
doaj +3 more sources
On Extended d-D Kappa Distribution
AxiomsThe thermal Doppler broadening of spectral profiles for particle populations in the absence or presence of potential fields can be described by kappa distributions.
Arak M. Mathai, Hans J. Haubold
doaj +3 more sources
Sheath Formation in a Plasma with Regularized Kappa Distribution
EntropyDebye shielding in an electron–ion plasma with regularized kappa distribution is examined. An unmagnetized collisionless plasma sheath with regularized kappa distributed electrons is investigated and the modified Bohm criterion is derived.
Rui Huo
doaj +3 more sources
Scalings for the Alfvén-cyclotron instability in a bi-kappa plasma
Earth and Planetary Physics, 2023 The particle velocity distribution in space plasma usually exhibits a non-Maxwellian high-energy tail that can be well modeled by kappa distributions.
YueQun Lou +4 more
doaj +1 more source
Dissipative Ion-Acoustic Solitary Waves in Magnetized κ-Distributed Non-Maxwellian Plasmas
Physics, 2022 The propagation of dissipative electrostatic (ion-acoustic) solitary waves in a magnetized plasma with trapped electrons is considered via the Schamel formalism.
Sharmin Sultana, Ioannis Kourakis
doaj +1 more source
Entropy, 2023 The effects of nonextensive electrons on nonlinear ion acoustic waves in dusty negative ion plasmas with ion–dust collisions are investigated. Analytical results show that both solitary and shock waves are supported in this system.
Zhipeng Liu
doaj +1 more source
Relativistic regularized kappa distributions [PDF]
Physics of Plasmas, 2022 The special relativistic generalization of isotropic regularized kappa distributions is derived and compared to that of the original Olbertian (or standard) kappa distributions. It is demonstrated that for the latter, the kappa parameter is even more strongly limited than in the non-relativistic case, while for the former, all positive kappa values ...
Linh Han Thanh +2 more
openaire +2 more sources
Physical Correlations Lead to Kappa Distributions
The Astrophysical Journal, 2022 Abstract The recently developed concept of “entropic defect” is important for understanding the foundations of thermodynamics in space plasma physics, and more generally for systems with physical correlations among their particles. Using this concept, this paper derives the basic formulation of the distribution function of velocities (or
G. Livadiotis, D. J. McComas
openaire +2 more sources
On the Determination of Kappa Distribution Functions from Space Plasma Observations
Entropy, 2020 The velocities of space plasma particles, often follow kappa distribution functions. The kappa index, which labels and governs these distributions, is an important parameter in understanding the plasma dynamics.
Georgios Nicolaou +2 more
doaj +1 more source