Scintillation screens
Imaging screens
Scintillation crystals processed to thin flat surface plates serve as excellent imaging screens with high spatial resolution. Extraordinary scintillation characteristics, high optical homogeneity, perfect surface flatness and high resistance are the key factors influencing the quality of the resulting radiography or readout.
Crytur's imaging screens are most suitable for electron beams, proton beams, low energy x-rays, UV light, VUV and XUV radiation.
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Materials
Standard scintillation materials used for imaging screens include YAG:Ce, LuAG:Ce and YAP:Ce. Both garnet materials - YAG:Ce and LuAG:Ce - provide excellent properties for imaging with lower energies. The emission spectra of both crystals make them ideal for consecutive photodiode and avalanche photodiode readout. On the other hand YAP:Ce is suitable for readout in the UV.
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The use of each material depends strongly on the desired output. We will always recommend the right material to fit your project upon project specification.
Dimensions
Precise processing allows us to deliver a wide variety of scintillation screens from standard or large diameter screens down to extremely thin screens with only 5 micrometer thickness!
| We can provide imaging screens in the following dimension ranges depending on the type of the screen. | Diameter | Thickness | |
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 LARGE DIAMETER SCREENS |
up to 105 mm | down to 200 µm | |
 STANDARD SCREENS |
typically up to 50 mm | typically 100-1000 µm | |
 VERY THIN FREESTANDING SCREENS |
YAG:Ce screens |
up to 50 mm up to 10 mm |
down to 50 µm down to 20 µm |
| YAP:Ce screens |
up to 50 mm up to 10 mm |
down to 100 µm down to 50 µm |
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 VERY THIN SCREENS WITH RING SUPPORT |
up to 10 mm up to 50 mm |
down to 20 µm down to 50 µm |
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 ULTRA-THIN SCREENS (ON SUBSTRATE ONLY) |
up to 40 mm up to 30 mm |
10 µm 5 µm |
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Support, marking, coating
Support and frames
Imaging screens may be either coupled to an underlying substrate with adhesives in order to achieve better optical readout or inserted into frames for easier manipulation. Ultra-thin screens are supplied on substrates only.
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Supporting substrates for imaging screen |
Frames, rings and flanges |
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Marking and coating
For easier beam visualisation we can provide customized marking such as a grid, cross or scale on the surface of the screen.
Optional surface coatings:
- reflection coatings – Al, Au or dielectric layer
- antireflection coating
- diffusion painting – TiO2, Al2O3
- conductive coatings - Al, ITO, C
