Chemistry 112 Radiation Intensity

Chemistry 112 Radiation Intensity - Drew Rasmussen...

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Drew Rasmussen Chemistry 112 Lab Katri Truhler May 5, 2011 Radiation Intensity Report Form A. Research Questions: a. Which equation matches the graph of the Beta Emitter? b. What is the value of n from equation 2? (Slope of the line in graph 2). B. Data and Results: a. The Emitters are a red disc with a special core of some kind, and a foil covering on one side. The sensor is a black box with a bronze colored screen over the most sensitive part. This is to be lined up with the emitter disc when measuring counts. The background count of the room is 32, this will be used to make sure that the counts we measured is only pertaining to that emitted by the disc and not the background radiation in the class room. b. Part 1. b.i. Background Count: 32 Counts Table 1.0 Layers of Cardboard vs. Raw and Corrected Counts (Beta Emitter, pg. 26) Layers of Cardboard Raw Count Corrected Count 0 (N 0 ) 352 320 1 290 258 2 225 193 3 177 145 4 162 130 5 146 114 6 115 83 7 126 94 8 125 93 9 95 63 10 99 67 *Excluding (from graph) data from 6 and 10 layers of cardboard because the number of counts increased when it should have decreased.
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Table 2.0 Distance from Emitter vs. Raw and Corrected Counts (Gamma Emitter, pg. 26)
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  • Spring '08
  • Chemistry, pH, #, 5 cm, Background radiation, 7.2cm, 8.2cm

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