hyperspy._components.volume_plasmon_drude module¶

class hyperspy._components.volume_plasmon_drude.VolumePlasmonDrude(intensity=1.0, plasmon_energy=15.0, fwhm=1.5, module='numexpr', compute_gradients=False, **kwargs)¶

Bases: hyperspy._components.expression.Expression

Drude volume plasmon energy loss function component, the energy loss function is defined as:

$f(E) = I_0 \frac{E(\Delta E_p)E_p^2}{(E^2-E_p^2)^2+(E\Delta E_p)^2}$

Variable	Parameter
$I_0$	intensity
$E_p$	plasmon_energy
$\Delta E_p$	fwhm

Parameters

intensity (float) –
plasmon_energy (float) –
fwhm (float) –

Notes

Refer to Egerton, R. F., Electron Energy-Loss Spectroscopy in the Electron Microscope, 2nd edition, Plenum Press 1996, pp. 154-158 for details, including original equations.

grad_fwhm(x)¶

grad_intensity(x)¶

grad_plasmon_energy(x)¶