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Watching Nuclear Particles for background radiation
Posted: Wed Dec 18, 2013 12:52 pm
by jrcounts
The cloud chamber is 4 1/2" top, 3" sides, and 3 5/8 bottom. For the experiment we saturated the felt, closed the chamber, put 2 lbs of dry ice on the tray. Then used hand to bottom of cloud chamber. 20 minutes later no change. During 2nd 20 minute cycle unknowing came lose from the top. It developed a wet look with ice crystals scattered throughout otherwise no change. No fog again. Tried a 3rd 20 minute cycle for a total of 60 minutes with still no change. Any suggestions what we did wrong or could change to make the experiment work?
Re: Watching Nuclear Particles for background radiation
Posted: Mon Sep 08, 2014 7:35 pm
by deleted-220204
Hello,
Sorry about your bad luck! I'm confused on what you mean by hands. What substance is that? When I created a particle cloud chamber with my group, we used methanol and cooled it with dry ice. So maybe if you try saturating the felt with methanol if you haven't done so already, you might have better luck. If you did use methanol, I'm not sure what's wrong. Maybe the felt is not saturated enough. Try adding more methanol to the chamber even if it looks saturated already so that you can get a methanol cloud. Good luck and ask me any other questions if you have any!