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drexel_duct_navigator_geiger [2016/11/07 20:15]
dwallace created
drexel_duct_navigator_geiger [2016/11/07 20:17] (current)
dwallace
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 The scratch built Geiger counter was used to measure background radiation. ​ An Arduino Uno was used to count pulses over ten second period. ​   The results were then compared with the kit built geiger counter. The scratch built Geiger counter was used to measure background radiation. ​ An Arduino Uno was used to count pulses over ten second period. ​   The results were then compared with the kit built geiger counter.
  
-  **Scratch built Geiger counter background radiation measurement:​** ​ 13 +/- 8 CPM+  ​**Scratch built Geiger counter background radiation measurement:​** ​ 13 +/- 8 CPM
   ​   ​
-  **Kit built Geiger counter background radiation measurement:​** ​ 14 +/- 9 CPM+  ​**Kit built Geiger counter background radiation measurement:​** ​ 14 +/- 9 CPM
  
 The background radiation measurements easily agreed within uncertainty. The background radiation measurements easily agreed within uncertainty.
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 Both geiger counters were then used to measure the radiation levels from a cesium source at 30 cm distance. Both geiger counters were then used to measure the radiation levels from a cesium source at 30 cm distance.
  
-  **Scratch built Geiger counter cesium source radiation measurement:​** ​ 538 +/- 92 CPM+  ​**Scratch built Geiger counter cesium source radiation measurement:​** ​ 538 +/- 92 CPM
   ​   ​
-  **Kit built Geiger counter cesium source radiation measurement:​** ​ 255 +/- 69 CPM+  ​**Kit built Geiger counter cesium source radiation measurement:​** ​ 255 +/- 69 CPM
  
 The scratch built geiger counter was found to be significantly more sensitive when exposed to the cesium source. ​ The scratch built design has a higher voltage across the Geiger Mueller tube 500v compared to 275v.  Higher voltage allows lower energy particles to be detected. ​ It is believed that this higher voltage is responsible for the higher count rate in the scratch built counter. The scratch built geiger counter was found to be significantly more sensitive when exposed to the cesium source. ​ The scratch built design has a higher voltage across the Geiger Mueller tube 500v compared to 275v.  Higher voltage allows lower energy particles to be detected. ​ It is believed that this higher voltage is responsible for the higher count rate in the scratch built counter.
drexel_duct_navigator_geiger.txt ยท Last modified: 2016/11/07 20:17 by dwallace