inscar 3.3.2

Physical environment

The plasma parameters that are supported natively by the program are

• Radar frequency [Hz]

  • This will also set the radar wave number (= -4pi(radar frequency)/(speed of light))

• Magnetic field strength [T]

• Aspect angle [1]

• Electron temperature [K]

• Ion temperature [K]

• Electron collision frequency [Hz]

• Ion collision frequency [Hz]

• Electron mass in atomic mass units [u]

• Ion mass in atomic mass units [u]

• Electron number density [m^(-3)]

• Ion number density [m^(-3)]

• Kappa value for the kappa velocity distribution function [1]

Custom simulation set-ups can be made by inheriting from the different classes. Say you want a Particle class that also carries information about the temperature of a collection of super thermal electrons as well as some height information. You then inherit from Particle and decorate it with the @attr.s object:

@attr.s
class RealDataParticle(isr.Particle):
    """Create a particle object with extra attributes."""

    superthermal_temperature: float = attr.ib(
        default=90000,
        validator=is_positive,
        on_setattr=attr.setters.validate,
    )
    z: int = attr.ib(default=300)

For more examples, see the assets directory.

Calculation method

The program support different methods of calculating the spectrum, based on how you assume the particles to be distributed. This includes a Maxwellian distribution (IntMaxwell class) and a kappa distribution (IntKappa class), in addition to any arbitrary isotropic distribution (IntLong class) which can take any Vdf as particle velocity distribution (default is VdfMaxwell). An example showing how a new Vdf class can be made is given in assets (VdfRealData).