(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Show that the attenuation length, [tex]\Lambda[/tex], is just equal to the average distance a photon travels before being scattered or absorbed.

2. Relevant equations

my book gives:

number of photons absorbed = [tex]\sigma\rho I(x) dx[/tex]

number of photons present after a thickness x = [tex]I(x)=I(0)e^{-\sigma \rho x}[/tex]

attenuation length = [tex]\Lambda = \frac{1}{\sigma\rho}[/tex]

3. The attempt at a solution

i'm really not sure where to go here... some idea on how to get started would be very much appreciated... thanks

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# Homework Help: Attenuation length

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