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Bethe-formula VS SRIM for Uran in Polycarbonate
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Nov24-11, 10:23 AM
I investigate polycarbonate foils (makrofol) of 90 μm thickness irradiated by U-ions with a charge of z= +28 and a specific energy of 11.4MeV/nucleon.
My problem is that in the Srim simulations the charge z is not questioned (or needed?), whereas the stopping power (-dE/dx) in the Bethe-formula is proportional to z^2.
I compared the dE/dx values of SRIM (srim.org) with the Bethe-Calculator of Sven Geier (http://www.sgeier.net/tools/bbt.html) and my own Bethe-calculations, they all vary.
My aim is the Bragg-curve, but therefore i would like to have the correct values/description of the stopping power.
Im sorry for my bad english.
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