deerlab.bg_strexp¶

bg_strexp = <deerlab.model.Model object>¶

Stretched exponential background model

Parameters:

tarray_like: Time vector, in microseconds.
decayscalar: Decay rate
stretchscalar: Stretch factor

Returns:

Bndarray: Dipolar background vector.

Notes

Parameter Table

Name	Lower	Upper	Type	Frozen	Unit	Description
`decay`	0	200	nonlin	No	μs⁻¹	Decay rate
`stretch`	0	6	nonlin	No		Stretch factor

Model

$B(t) = \exp\left(-\kappa \vert t\vert^{d}\right)$

Although the bg_strexp model has the same functional form as bg_homfractal, it is distinct since its first parameter is a decay rate constant and not a spin concentration like for bg_homfractal.