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Cloud chamber solvents

  1. Dec 29, 2012 #1
    I recently observed a liquid pooling at the bottom of my cloud chamber. It was purple in color and rather odd. It was certainly flammable, which leads me to believe that it was a result of solventing between the supersaturated alcohol and the canned air used for my chamber.
    I'm not quite sure what it is. I know that it was probably a combination of the Isopropyl alcohol and the difluroethane, but I'm not sure on this. Could anyone help me out?
  2. jcsd
  3. Dec 31, 2012 #2


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    Does your cloud chamber have a dark background paper?
  4. Jan 1, 2013 #3
    THe one that I was using had the pain spray painted onto it. It was essentially a jar, with a metal top. The sponge was attached to the metal, and the outside bottom of the jar was spray painted black.
    Incidentally, I found out that one had air leaks. I made a new one with sheet metal and a plastic box. The purple liquid did not appear.
  5. Jan 1, 2013 #4


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    Perhaps the purple is something extracted from the sponge.
  6. Jan 2, 2013 #5
    But why would it only be extracted from the sponge in an air leak? In the good one, nothing showed up.
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