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X-ray phosphors and super-fast X-ray phosphors for optical ceramics
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Are sensitive to low-, mid-, and high-energy radiation. When used in medicine diagnostics ( roentgenogram ), they lower an irradiation dose of a patient by a factor of 3-5. May be prepared in the form of blocks of transparent ceramics and used in systems of computed tomography.
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Table 1. Characteristics
of X-ray phosphors.
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| Mark |
Density, g/cm3 |
Spectral
maximum, nm |
Energy
output, % |
Persistence
time, ms |
Average
particle
size
d50, microns |
| down to 10% |
down to 1% |
| Re-383 |
5,00 |
383
417 |
16-18 |
1,8 |
12 |
4-6 |
| Re-430 |
6,50 |
430 |
8-10 |
10-3 |
10-2 |
10 |
| Re-510 |
7,35 |
510 |
8-9 |
10-2 |
10-1 |
8 |
| Re-543 |
5,78 |
543 |
12-14 |
1,4 |
12 |
14-20 |
| Re-544 |
7,38 |
544 |
18-20 |
1,6 |
15 |
10-16 |
| Re-545 |
8,45 |
545 |
10-12 |
1,5 |
15 |
10 |
| Re-540 |
6,30 |
535 |
8-10 |
10-4 |
10-3 |
2-20 |
| Re-611 |
6,50 |
611 |
6-10 |
1,2 |
10 |
10 |
| Re-520 |
5,5 |
520 |
10 |
10-3 |
10-2 |
20 |
| Re-540 |
8,8 |
540 |
10 |
10-3 |
10-2 |
20 |
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