IonicLevel

class plasmapy.particles.ionization_state.IonicLevel(ion: Particle, ionic_fraction=None, number_density=None, T_i=None)[source]

Bases: object

Representation of the ionic fraction for a single ion.

Parameters:

ion (atom-like) – The ion for the corresponding ionic fraction.
ionic_fraction (real number, optional) – The fraction of an element or isotope that is at this ionization level. Must be between 0 and 1, inclusive.
number_density (Quantity, optional) – The number density of this ion.

Examples

>>> alpha_fraction = IonicLevel("alpha", ionic_fraction=0.31)
>>> alpha_fraction.ionic_symbol
'He-4 2+'
>>> alpha_fraction.charge_number
2
>>> alpha_fraction.ionic_fraction
0.31

Attributes Summary

`T_i`	The ion temperature of this particular charge state.
`charge_number`	The charge number of the ion.
`ionic_fraction`	The fraction of particles of an element that are at this ionization level.
`ionic_symbol`	The symbol of the ion.
`number_density`	The number density of the ion.

Attributes Documentation

T_i: The ion temperature of this particular charge state.

charge_number: The charge number of the ion.

ionic_fraction

The fraction of particles of an element that are at this ionization level.

Notes

An ionic fraction must be in the interval \([0, 1]\).

If no ionic fraction is specified, then this attribute will be assigned the value of nan.

ionic_symbol: The symbol of the ion.

number_density: The number density of the ion.