Great followup info!
Looking for the datasheets for the pin diodes I've got in the parts drawer to see if I can make the Maxim circuit. I know there's some very low noise op-amps down there.
Looking for the datasheets for the pin diodes I've got in the parts drawer to see if I can make the Maxim circuit. I know there's some very low noise op-amps down there.
The ion chambers are impressive because even lower-cost. But they also detect the presence of people, touches and what not. :) My favourite aspect of silicon sensors like those PIN diodes is that you get the absorbed particle energy as well. In particular with alpha particles that gets quite interesting when measuring for example old ceramics painted with uranium glaze ('Fiestaware').