I have seen some examples where a system has a resonance frequency, and, when the system changes, its Q factor also changes, and so the resonance frequency shifts, and this shift can be measured to detect the change in the system. An example I can think of is very sensitive mass measurement instruments, where addition of material changes the damping factor of a vibrating plate of a capacitor/piezoelectric surface. I have a few questions with regards to this method, if anyone has any background or ideas on this: 1. Could a change in dielectric - say its permitivity changes - create a shift in frequency of an AC signal on capacitor and be detected? 2. How does ionizing radiation change a dielectric? I understand, under the right conditions(high voltage), it can create ion pairs that I would think has to change the dielectric properties in some way. 3. Would measuring a frequency/phase shift or Q factor change on an ion chamber from dielectric changes in an AC field have more, less, or about the same sensitivity as measuring the charge collected from ion pairs in a DC field? I think that this would offer a lot more noise and leakage immunity and improved bandwidth from conventional extremely low current measurements. I am trying to think of different/non-traditional ways to use ion chambers, and just am curious about general opinions or thoughts on this.