A Alpha Stopping Power Database for High Z Materials

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The discussion centers on the challenge of calculating alpha stopping power for high Z materials, specifically Americium and Uranium, in the energy range of 1-10 MeV. The user is struggling to reconcile manual calculations using the Bethe-Bloch formula with existing database results and is seeking software that can perform these calculations accurately. There is a comparison of Americium's density and nuclear stopping power to Uranium, noting discrepancies in reported densities from various sources. The user mentions that existing databases like ASTAR and SRIM do not provide data beyond Uranium. A suggestion is made to explore Geant4 as a potential tool for these calculations.
sussybaka
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TL;DR
Looking for a database/calculation software to obtain alpha stopping power in high Z materials, especially americium. All the databases I know of (ASTAR/SRIM) only report up to Uranium and I can't find any measurements in literature. Thanks!
That's about it. I've been trying to do the calculation manually with Bethe-Bloche without corrections in the energy range I'm interested in (1-10 MeV) for the highest Z material with data available for validation (Uranium), but I can't get a result that agree well with the database, so I'm hoping to find a software that has this calculation already done. Thanks for the help!
 
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Americium will be very similar to uranium (in terms of MeV/(g/cm2)). If the difference matters then you probably have so much americium that you have a lot of regulatory problems to solve first.
 
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mfb said:
Americium will be very similar to uranium (in terms of MeV/(g/cm2)).
I concur. I was thinking about this. Let's assume one has Am-241. Z = 95, so the nuclear stopping power is slightly greater, but the density of Am is ~13.67 g/cm3 compared to that for U of 19.6 g/cm3, so the electron density is quite a bit less, so the range could be slightly greater.

A Wikipedia article on Americium has density around 12 g/cm3, which appears to be incorrect given the other more reliable sources. Ref: https://en.wikipedia.org/wiki/Americium#Physical_properties
rsc.org also has density of 12 g/cm3. Refl: https://www.rsc.org/periodic-table/element/95/americium I wonder if they are reporting the density of AmO2.

CRC's Handbook of Physics and Chemistry, 68th edition, has density of Am as 13.67 g/cm3, which is consistent with some chemical suppliers, e.g., Lenntech, and Jefferson Lab.
https://www.lenntech.com/periodic/elements/am.htm
https://education.jlab.org/itselemental/ele095.html
 
sussybaka said:
TL;DR Summary: Looking for a database/calculation software to obtain alpha stopping power in high Z materials, especially americium. All the databases I know of (ASTAR/SRIM) only report up to Uranium and I can't find any measurements in literature. Thanks!

That's about it. I've been trying to do the calculation manually with Bethe-Bloche without corrections in the energy range I'm interested in (1-10 MeV) for the highest Z material with data available for validation (Uranium), but I can't get a result that agree well with the database, so I'm hoping to find a software that has this calculation already done. Thanks for the help!
Have you looked at Geant4? I think you can do it using it?
 
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