inverse square law gamma radiation physics

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Revision0161
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#1
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How efficient is a Geiger Muller at detecting gamma radiation?
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Rexar
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Not very
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LisaNikita
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Revision0161
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(Original post by Rexar)
Not very
why?
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Revision0161
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(Original post by LisaNikita)
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Rexar
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Gamma is weakly ionising so is not likely to ionise when it passes through the tube. The tube uses the principle of ionisation to detect radiation so won't detect much gamma
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Darth_Narwhale
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However this can be accounted for. If you know background should be, say, 40 events per second, but you only detect 5, then you know that your detector measure's an eighth of the true value.
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