hyperspy.misc.eels.effective_angle module

hyperspy.misc.eels.effective_angle.effective_angle(E0, E, alpha, beta)

Calculates the effective collection angle

Parameters:

• E0 (float) – electron beam energy in keV
• E (float) – energy loss in eV
• alpha (float) – convergence angle in mrad
• beta (float) – collection angle in mrad

Returns:

float

Return type:

effective collection angle in mrad

Notes

Code translated to Python from Egerton (second edition) page 420