Cerium fluoride (CeF3) is a newly discovered inorganic scintillation crystal. It is one of the heavy and first scintillators suitable for various high energy physics experiments. Since the scintillation process is fast (5~30ns), the light yield is reasonably great (as large as 4-5% of NaI:Tl) and the degradation at 104rad irradiation is less than 5% per unit radiation length, it would be very useful for the applications where high counting rates, good stopping power and nanosecond time resolution (The emission of CeF3 consists of a fast component with 5ns at 310nm and a slow one at 340nm.
Scintillation Property
|
Density (g.cm-3) |
6.16 |
|
Melting point (¡æ) |
1443 |
|
Radiation length (cm) |
1.68 |
|
Moliere radius (cm) |
2.63 |
|
Decay constant (ns) |
5(fast), 30 (slow) |
|
Peak emission (nm) |
310(fast), 340(slow) |
|
Light output relative to NaI(Tl) (%) |
4-5 |
|
Index of refraction |
1.68 |
|
Hardness (Mho) |
4 |
|
Hygroscopic |
No |
|
Cleavage |
(001) |
|
