Physics Help Forum Experiment?

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 Apr 16th 2008, 02:03 AM #1 Junior Member   Join Date: Apr 2008 Posts: 6 Experiment? The question is; "Describe an experiment that you would perform in order to show that the radiation from a particular source consisted of only beta particles." Here is my thinking, Place a sheet of paper, ~3mm of aluminium and a few cm of lead each 3cm apart from each other in a line directly in front of the source. Place GMT's in each of the gaps and one between the source on the paper. Accounting for background radiation, if the 2 GMT's; one between the source and the paper, the other between the paper and ~3mm of aluminium, are similar in counts and the GMT between ~3mm of aluminium and lead reads 0 counts (accounted for background radiation) then the source contains only beta particles. This however doesn't seem right, if not can someone point me in the right direction or even a simpler experiment. Thanks.
Apr 16th 2008, 04:47 AM   #2

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 Originally Posted by Sean12345 The question is; "Describe an experiment that you would perform in order to show that the radiation from a particular source consisted of only beta particles." Here is my thinking, Place a sheet of paper, ~3mm of aluminium and a few cm of lead each 3cm apart from each other in a line directly in front of the source. Place GMT's in each of the gaps and one between the source on the paper. Accounting for background radiation, if the 2 GMT's; one between the source and the paper, the other between the paper and ~3mm of aluminium, are similar in counts and the GMT between ~3mm of aluminium and lead reads 0 counts (accounted for background radiation) then the source contains only beta particles. This however doesn't seem right, if not can someone point me in the right direction or even a simpler experiment. Thanks.
What's a GMT? It would seem to me that you could do this fairly easily with a bubble chamber as well.

-Dan
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Apr 16th 2008, 06:31 AM   #3
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 Originally Posted by topsquark What's a GMT? It would seem to me that you could do this fairly easily with a bubble chamber as well. -Dan
Gieger-muller tube, and a bubble chamber is a much better idea, thanks.

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