CR39 is very hard to use. It is not for dummies or beginners. That's the take home lesson I learned after listening to 2 days of discussion on CR32 by experts.
There is a reason people invented electronic particle detectors and stopped using the analog ones such as CR39. A lot of reasons, actually. I am not saying the old techniques are inferior, but they are harder. To say they are inferior would be like saying that RTDs are better than mercury thermometers. That is true in some ways but not so true in other ways. It is complicated. - Jed
