quantum_theta

plasmapy.physics.dimensionless.quantum_theta(T: Unit("K"), n_e: Unit("1 / m3"))

Compares Fermi energy to thermal kinetic energy to check if quantum effects are important.

Parameters:
  • T (Quantity) – The temperature of the plasma.
  • n_e (Quantity) – The electron number density of the plasma.

Examples

>>> import astropy.units as u
>>> quantum_theta(1*u.eV, 1e20*u.m**-3)
<Quantity 127290.61956522>
>>> quantum_theta(1*u.eV, 1e16*u.m**-3)
<Quantity 59083071.83975738>
>>> quantum_theta(1*u.eV, 1e26*u.m**-3)
<Quantity 12.72906196>
>>> quantum_theta(1*u.K, 1e26*u.m**-3)
<Quantity 0.00109691>
Returns:theta
Return type:Quantity