286 radiation lab

# 286 radiation lab - various sources and in different ways....

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John Karlen Lab Partner: Greg Physics 286 Experiment 1: Radioactivity 2/14/10 I Introduction : The purpose of the lab is to study different kinds of radiation and their affect on different kinds of matter. We employ a Geiger Mueller tube, which consists of a tube with a window, through which the radiation is shot. A wire at a potential of several hundred volts above the tube, is suspended within the tube. When a radiation particle ionizes the low pressure gas in the tube, it creates an avalanche of electrons and positive ions, which create a current pulse. The pulse is registered as a count. The Geiger Mueller tube gives tells us how much radiation enters its tube, allowing us to analyze the radiation from

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Unformatted text preview: various sources and in different ways. II Analysis : Part A: Trial 1 Trial 2 Trial 3 Mean 665 691 664 Standard Deviation 25 24 19 Standard Error of the Mean 3.54 3.39 2.69 # of measurements between - and + 36 36 37 Analysis:-Trial 1 and 3 agree within their errors (6653.39 is within 6642.69), but the Trial 1 and 3 means are more than 7 errors away from the Trial 2 mean. -Trial 1: ()^(.5) = 25.8 this value is very close to = 25-Trial 2: ()^(.5) = 26.3 this value is very close to = 24-Trial 3: ()^(.5) = 25.8 this value is somewhat close to = 19-...
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## This document was uploaded on 10/31/2011 for the course PHYSICS 286 at UMass (Amherst).

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286 radiation lab - various sources and in different ways....

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