Simulating a Proportional Counter with Soil Sample in SRIM

[sepideh]

hello every one,
I want to simulate a proportional counter with soil sample in Srim. but I don't know how to put the beam into my source, I mean that how can define the position of ions in soil sample. because my beam arising from my soil sample. and my source actually is soil.
if you answer my question I will appreciate
sincerely

 

[Tom.G]

http://www.srim.org/SRIM/Tutorials/SRIM Special - Using TRIM DAT for TRIM Control.doc