Physics and Engineering of Radiation Detection

336 Chapter 6. Scintillation Detectors and Photodetectors Solution: The maximum efficiencies of the two crystals can be obtained ...

6.2. Organic Scintillators 337 in differentS 1 vibrational levels to go to theS 1 ground level through radiationless transitions ...

338 Chapter 6. Scintillation Detectors and Photodetectors A typical emission and absorption spectra of an organic scintillator i ...

6.2. Organic Scintillators 339 S 2 S 1 S 0 Incident Radiation λmax,a T 3 T 2 T 1 Inter−state Transitions λmax,p>>λmax,a E ...

340 Chapter 6. Scintillation Detectors and Photodetectors Although we can not use absolute numbers of scintillation and optical ...

6.2. Organic Scintillators 341 The reader should note that not all the disadvantages listed here are typical of only plastic sci ...

342 Chapter 6. Scintillation Detectors and Photodetectors the Birk’s formula. The behavior of the light output with respect to t ...

6.2. Organic Scintillators 343 Wavelength Shifter (~0.05% by weight) Scintillator (~1% by weight) Energy Transfer Photons Ultrai ...

344 Chapter 6. Scintillation Detectors and Photodetectors α−Particles Protons Electrons Energy Li gh t Yi eld Figure 6.2.6: Vari ...

6.2. Organic Scintillators 345 Table 6.2.1: Wavelength of maximum emissionλmaxand decay constantτof some organic plastic scintil ...

346 Chapter 6. Scintillation Detectors and Photodetectors must be used in highly purified forms. Even addition of small amounts ...

6.2. Organic Scintillators 347 (^400500) 50 100 Wavelength (nm) Transm iss ion (%) Figure 6.2.9: Typical light transmission ca- ...

348 Chapter 6. Scintillation Detectors and Photodetectors large volume liquid scintillator detectors are already in operation an ...

6.2. Organic Scintillators 349 D.1 Anthracene (C 14 H 10 )...................... Anthracene is perhaps the most widely used orga ...

350 Chapter 6. Scintillation Detectors and Photodetectors Figure 6.2.11: Relative light yield of pure and doped an- thracene wit ...

6.3. Inorganic Scintillators 351 Figure 6.2.12: Light yield of an- thracene and stilbene to differ- ent charged particles (40). ...

352 Chapter 6. Scintillation Detectors and Photodetectors Scintillation Light Luminescence Radiation Center Incident Electron Ho ...

6.3. Inorganic Scintillators 353 Scintillation Light Radiation Incident Eg Electron Hole E Valence Band Conduction Band Dopant L ...

354 Chapter 6. Scintillation Detectors and Photodetectors Radiation Incident Electron Hole Eg Valence Band Core Valence Band Con ...

6.3. Inorganic Scintillators 355 Figure 6.3.4: Decrease in gain of a detector based on undopedCsI(19). Figure 6.3.5: Effect of p ...