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Mean life time
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readme.md

Mean life time

Let say you have a process that decays exponentially, with constant lamb

>>> t = [..] #list of times
>>> x = [x0 * math.exp(-t[i]/lamb) for i in range(n)]

Constant lamb can be derived from vector x

>>> lamb = 1/N * sum([t[i]/math.log(x0/x[i])for i in range(n)])
>>> tau = 1/lamb = T/math.log(2) # T is the mean life time

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