qspec.chi2_ex_pdf  (  ex ,  t  )[source]

The $\chi^2_1$ probability density of an energy component $E_x$ $$ \rho(E_x) = \sqrt{\frac{1}{\pi E_xk_\mathrm{B}T}}\exp\left(-\frac{E_x}{k_\mathrm{B}T}\right), $$ in thermal equilibrium at temperature $T$.

Parameters:

exarray_like

The energy quantiles $E_x$ (eV).

tarray_like

The temperature $T$ of the environment (K).

Returns:

rho_exndarray

The probability density in thermal equilibrium at the energy ex (1/eV).