lab 6 - Physics 134 Lab 6 Abstract: In this lab, we used a...

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Physics 134 Lab 6 Abstract: In this lab, we used a Geiger counter to measure the penetration of radiation using Polonium 210, Strontium 90, and Cobalt 60, which radiated alpha, beta, and gamma particles, respectively. We saw the differences between the three types of emissions and also the differences between types of absorbers. We also calculated the half-life of Indium 116 from the graph of its decay. Questions: 1. The background for 5 minutes had 53 counts, so NB is 10.6 and the range of NB±√NB is 7.34 to 13.85. Statistical Nature of Radioactivity Trial Background/Minute In Range? 1 22 No 2 20 No 3 25 No 4 8 Yes 5 8 Yes 6 12 Yes 7 15 No 8 15 No 9 29 No 10 17 No Average background/minute= 17.1 2. Penetration of Radiation into Matter Source Radiation Absorber Counts/2 minutes (minus 2*17.1 for average background) Polonium 210 α None 461.8 Paper 9.8 Strontium 90 β- None 1338.8 3.2mm Al 253.8 Cobalt 60 γ None 4373.8
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6.4mm Al 4406.8 6.4mm Pd 1476.8 3. The slope of the graph of Indium 116’s decay is -1.83*10^-4. We can use the equation
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lab 6 - Physics 134 Lab 6 Abstract: In this lab, we used a...

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