Hi, in the late '90s I used a software package from AIC Software Inc., called Photcoef, to calculate the ionizing dose / energy deposited and attenuation of x-rays and gamma rays through material stacks. This was very useful but the DOS software no longer functions and AIC no longer exists. Do you know any alternative that includes dose build-up due to generated electrons etc? I know I could use GEANT but this is rather too complex for my needs. Thanks Mark