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hw5_2011 - strength and what are the sources for noise Q2...

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Homework #5 (04-06-2010) NPRE 441, Instructor: L. J. Meng E-mail: [email protected], Office phone: 217-3337710, Office: 111E Talbot Lab. Due date: 5:00pm on Monday, April 12th, 2011. Please hand in your solutions to me at 111E Talbot or leave it in my mail box at 214 Talbot. NPRE 441, Principles of Radiation Protection, Spring 2010 Q1. Please explain what are the main reasons for semiconductor detectors to offer a superior signal-to-noise ratio over gas and scintillation detectors? Please be as detailed as possible, such as what determine the signal
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Unformatted text preview: strength and what are the sources for noise? Q2. What is a p-n juction? Why do we need it? Q3. What is the so-called Fano factor? What are typical Fano factor values for gas, scintillation and semiconductor detectors and why the numbers are different? What is the significance of Fano factor to detector performance? Q4. Could you name a technique for identifying different types of charge particle experimentally? And please explain how does it work....
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