I'm having a problem on a homework problem that I have for one of my nuclear waste engineering courses. I'm not exactly sure where to start on it. I've been looking at different resources and I haven't found anything that I can use. The question is as follows: Estimate the energy in MeV of an alpha particle from a source of activity 1.0 microcuries which creates a saturation current of 1.0*10^(-9) A in an inonisation chamber. Assume e = 1.6*10^(-19) C, 1 Ci = 3.7*10^(10) disintegrations per sec. and 30 eV is needed to produce on ion pair. I'm not sure where to start on this problem, so if there are a few equations out there that someone could let me know about, I would be greatly appreciative.