Dosimetry Flashcards
1
Q
Name 5 types of radiation detector
A
- gas-filled
- solid-state (semiconductor)
- organic liquid scintillators
- film
- inorganic scintillators
2
Q
Describe inorganic scintillators
A
- crystalline solids
- scintillate because of characteristics of their crystal structure
- often need to be doped with impurities
3
Q
What impacts the sensitivity of an inorganic scintillator?
A
- its density
- effective atomic number
- (linear) attenuation coefficient
4
Q
What impacts the energy and spatial resolution of an inorganic scintillator?
A
its light output (no photons per MeV)
5
Q
What impacts an inorganic scintillator’s counting speed?
A
Its decay time
6
Q
What impacts the cost and photosensor requirements of an inorganic scintillator?
A
- wavelength of scintillation light
- index of refraction
- hygroscopy (yes or no)
- sturdy/hardwearing (yes or no)
7
Q
From a spectrum of relative no. of counts vs energy, how do you calculate the energy resolution of a detector?
A
Find the peak (maximum height), find FWHM
FWHM% = dE/E * 100
