qspec.t_xi  (  xi ,  f ,  u ,  q ,  m  )[source]

The temperature of an ensemble of ions with asymmetry parameter xi $$ T = \xi\frac{\sqrt{8qUmc^2}}{\gamma k_\mathrm{B}f}, $$ where $\gamma$ is the relativistic time-dilation factor.

Parameters:

xiarray_like

The asymmetry parameter $\xi$ ([f]).

farray_like

The rest-frame transition frequency (arb. units).

uarray_like

The acceleration voltage (V).

qarray_like

The electric charge of the ions (e).

marray_like

The mass of the ions (u).

Returns:

Tndarray

The temperature $T$ (K).