How can we calculate the damping factor using the Lorentzian fit extracted data?

10 January 2015 1 10K Report

Lorentzian fitting of the spectral peak (power spectral density Vs Frequency) gives four factors i.e. Frequency, Linewidth, amplitude and peak area.

How can we calculate damping factor using Lorentzian fit extracted data?

Marek Wojciech Gutowski

Solving the harmonically forced and damped oscillator you will obtain Lorentzian curve (as a function of frequency). Here I mean a Newton-type damping, being proportional to velocity. Half-width of the curve will be linearly dependent on damping factor, but I don't remember what is the value of proportionality factor (1/2 ?).

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