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Forum: Processes Involving Optical Photons
Re: Question how can I get the absorption length of other materials (yanxin0221)
Date: 02 Sep, 2014
From: Zach Miller <Zach Miller>

Hi,

The absorption length will depend mostly on the chemical make-up of the material and will be, usually, an experimentally defined parameter.

As an example, I am working with plastic scintillators, so I used google to find papers in scientific journals detailing work on plastic absorption/attenuation lengths.

(Example from JLab: https://www.jlab.org/Hall-B/notes/clas_notes92/note92-007.pdf ).

Generally, you can calculate this using an attenuation calculation of something like:

(I/I0) = exp[-u*L]

where u is based on the input masses and abundances on the material. The length of interest will be when I/I0 = 1/Exp[1].

Hope this helps, Zach

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