Plasma parameters (plasmapy.formulary.parameters)¶
This module gathers basic and general plasma parameters such as the plasma frequency or Debye length.
Functions¶
mass_density(density, Unit(“kg / m3”)], …) |
Utility function to merge two possible inputs for particle charge. |
Alfven_speed(B, density, Unit(“kg / m3”)][, …]) |
Return the Alfvén speed. |
ion_sound_speed(T_e, T_i, n_e, k[, gamma_e, …]) |
Return the ion sound speed for an electron-ion plasma. |
thermal_speed(T, particle[, method, ndim]) |
Return the most probable speed for a particle within a Maxwellian distribution. |
thermal_pressure(T, n) |
Return the thermal pressure for a Maxwellian distribution. |
kappa_thermal_speed(T, kappa[, particle, method]) |
Return the most probable speed for a particle within a Kappa distribution. |
Hall_parameter(n, T, B, ion[, particle, …]) |
Calculate the ratio between the particle gyrofrequency and the particle-ion particle collision rate. |
gyrofrequency(B[, particle, signed, Z, to_hz]) |
Calculate the particle gyrofrequency in units of radians per second. |
gyroradius(B[, particle]) |
Return the particle gyroradius. |
plasma_frequency(n[, particle, z_mean, to_hz]) |
Calculate the particle plasma frequency. |
Debye_length(T_e, n_e) |
Calculate the characteristic decay length for electric fields, |
Debye_number(T_e, n_e) |
Return the number of electrons within a sphere with a radius of the Debye length. |
inertial_length(n, particle) |
Calculate a charged particle’s inertial length. |
magnetic_pressure(B) |
Calculate the magnetic pressure. |
magnetic_energy_density(B) |
Calculate the magnetic energy density. |
upper_hybrid_frequency(B, n_e[, to_hz]) |
Return the upper hybrid frequency. |
lower_hybrid_frequency(B, n_i[, ion, to_hz]) |
Return the lower hybrid frequency. |
Bohm_diffusion(T_e, B) |
The Bohm diffusion coefficient was conjectured to follow Bohm model of the diffusion of plasma across a magnetic field and describe the diffusion of early fusion energy machines. |
Examples
