reference_parameters

Reference parameters

Reference parameters are not needed or used by the main part of the code, but define the physical units of the simulation, and are needed for a few specific steps during setup (e.g. calculation of normalised collision frequency).

Calculate normalized electron-electron collision frequency for Coulomb collisions using reference density, mass and speed. Note this is not the thermal collision frequency evaluated with reference parameters, but rather the quantity that when multiplied by $\hat{n}s/v_{Ts}^3$ gives the de-dimensionalised thermal collision frequency - the difference is a factor of $2^{3/2}$.

Calculate normalized electron-ion collision frequency for Coulomb collisions using reference density, mass and speed. Note this is not the thermal collision frequency evaluated with reference parameters, but rather the quantity that when multiplied by $\hat{n}s/v_{Ts}^3$ gives the de-dimensionalised thermal collision frequency - the difference is a factor of $2^{3/2}$.

Currently valid only for hydrogenic ions (Z=1)

Calculate normalized ion-ion collision frequency for Coulomb collisions using reference density, mass and speed. Note this is not the thermal collision frequency evaluated with reference parameters, but rather the quantity that when multiplied by $\hat{n}s/v_{Ts}^3$ gives the de-dimensionalised thermal collision frequency - the difference is a factor of $2^{3/2}$.

Currently valid only for hydrogenic ions (Z=1)