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Cool stuff! Here are a few interesting resources: http://www.techlib.com/science/ion.html http://www.techlib.com/science/ion.html - old and gold. A friend trie
by joshvm 6y ago
Cool stuff! Here are a few interesting resources:
http://www.techlib.com/science/ion.html http://www.techlib.com/science/ion.html - old and gold. A friend tried building these ion chambers, but apparently getting high enough isolation between the container and the electrode was very hard.
http://physicsopenlab.org/2016/04/24/diy-cherenkov-detector/ http://physicsopenlab.org/2016/04/24/diy-cherenkov-detector/ - one for detecting muons (a PMT taped inside a thermos)
And a fun little application note from Maxim to build a gamma detector from a photodiode : https://www.maximintegrated.com/en/design/technical-documents/app-notes/2/2236.html https://www.maximintegrated.com/en/design/technical-document...
- kjs3 6y agoGreat 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.
- 0zelot 6y agoThe circuit used in the blog article is a very much simplified version of the Maxim one. And probably not so much worse in terms of signal to noise ratio: https://github.com/ozel/DIY_particle_detector/ https://github.com/ozel/DIY_particle_detector/ 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').