6.3

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StretchedKT

Description

For observation of muon spin relaxation MuSR spectra with lineshapes lying between a Guassian and a Lorentzian,

\[A(t)=A_0\left(\frac{1}{3}+\frac{2}{3}\left(1-(\sigma t)^\beta\right)e^{-\frac{(\sigma t)^\beta}{\beta}}\right)\]

where,

\(\sigma\) is KuboToyabe decay rate,

\(A_0\) is the amplitude,

\(\beta\) is the stretching exponential and it ranges from 1 (neglible nuclear field) and 2 (strong nuclear field).

Properties (fitting parameters)

Name Default Description
A0 1.0  
Beta 1.0  
Sigma 0.1  

(Source code, png, hires.png, pdf)

../../_images/StretchedKT-1.png

Source

Python: StretchedKT.py