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iation Safety Officer Course Module 1.7 – Radiation Detection and Measurement

2.2.2 Example of solide state detectors..........................................16

2.2.2.1 High Purity Germanium Detectors .....................................16
2.2.3 Summary of various solid state conductivity detectors ..........17
2.3 Solid State Detectors Versus Gas-filled Detectors .......................18
SELF-CHECK 4 ..........................................................................................18
3. DETECTORS BASED ON SCINTILLATION ......................................19
3.1 How they work ..............................................................................19
3.2 Types of Scintillation Detector ......................................................20
3.2.1 Zinc sulphide detectors..........................................................20
3.2.2 Sodium iodide detectors ........................................................21
3.2.3 Plastic organic scintillators ....................................................22
3.2.4 Liquid organic scintillators .....................................................22
3.3 Summary of Scintillation Detectors ...............................................22
3.4 Photomultiplier Tubes ...................................................................23
3.4.1 How they work .......................................................................23
SELF-CHECK 5 ..........................................................................................23
4. NEUTRON DETECTORS...................................................................24
4.1 How they work ..............................................................................24
4.2 Types of Neutron Detectors..........................................................24
4.2.1 Boron trifluoride proportional counters...................................25
4.2.2 Helium proportional counters.................................................26
4.2.3 Gas recoil proportional counter..............................................26
4.2.4 Bubble detectors....................................................................27
4.3 Summary of Neutron Detectors ....................................................27
SELF-CHECK 6 ..........................................................................................28
5. ELECTRONIC COMPONENTS..........................................................28
5.1 Voltage Supply .............................................................................29
5.2 Direct Current Amplifier ................................................................29
5.3 Pre-amplifier .................................................................................29
5.4 Pulse Amplifier..............................................................................30
5.5 Discriminator.................................................................................30
5.6 Counting Devices .........................................................................30
SELF-CHECK 7 ..........................................................................................30
KEY POINTS ..............................................................................................31

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