YAP scintillation probe - CRYTUR
#Basic description
- scintillation probe, which is routinely used for monitoring of HXR radiation at Golem tokamak
Physical properties of scintillation material:
| Density | Hardness by Mohs | Index of refraction | Melting point | Thermal expasion | Crystal structure | Hydroscopic |
|---|---|---|---|---|---|---|
| \(5,37 \ \mathrm{g/cm^3}\) | 8,6 | 1,95 | \(1875^{\circ} C\) | $0.4-1.1 ^{-5}/K $ | rhombic | No |
Scintillation properties of scintillation material:
| Wavelength of max. emission | Decay constant | Afterglow | Radiation length for \(511 \ \mathrm{511}\) | Photo yield at \(300 \ \mathrm{K}\) (\(27 ^{\circ}C\)) | Integrated light output compared to NaI:Tl |
|---|---|---|---|---|---|
| \(370 \ \mathrm{nm}\) | \(25 \ \mathrm{ns}\) | \(0.0005 \%\) at \(6 \mathrm{ms}\) | \(2.7 \ \mathrm{cm}\) | \(25\times10^3 \ \mathrm{Ph/MeV}\) | \(70 \%\) NaI:Tl |
For additional information about YAP(Ce) scintillation material see page or page
#Useful hints
- scintillation probe should be operated with relatively low voltage \(< 1 \ \mathrm{kV}\), optimal operation voltage \(\approx 0.6 \ \mathrm{kV}\)
#Useful materials and manuals
