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The dark rate is calculated by multiplying these three factors together. It is the probability of an event, multiplied by the rate at which the probability is calculated, then multiplied by number of places that this is occuring simultaneously.  
 
The dark rate is calculated by multiplying these three factors together. It is the probability of an event, multiplied by the rate at which the probability is calculated, then multiplied by number of places that this is occuring simultaneously.  
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The actual energy of electrons follow a poisson distribution, where a large number of electrons have very little amounts of energy while a miniscule number of electrons have a very large amount of energy.
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Therefore, the probability of the electionhaving a large amount of energy is
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<math>Probability = e^{-E_g/kT}</math>
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where <math>E_g  Silicon = 1.12 eV</math>
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and <math>k = 1.3806503 * 10^{-23} J K^{-1}</math>
     
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