|Message: Re: range cut for very thin layers||Not Logged In (login)|
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Hi Michel, I looked at the PhotonProcesses example. I replaced the medium to Tungsten and varied the thickness of it as I shot 140keV gammas. For thicknesses greater than 1cm or so the calculated attenuation coefficients match well with the known (NIST) values. However as I go down on thicknesses, <1.*mm , I do not get the known (NIST) values.
I,then tried to calculate it by simplying using the "Nb of incident particles surviving the absorber" which given in this example code by the usual I/Io = e^(-mu . t), t=thickness.
I still cannot reproduce mu for tungsten.
Am I doing/interpreting something wrong here?
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