Stilbene
From Detec-Rad.com
(C14H12)
Mainly used for fast neutron detection and spectroscopy. Pulse rise time analysis techniques can be applied to discriminate between neutrons and gamma radiation background or between α and β particles.
- Stilbene has a high structural perfection and performance stability
- For applications where neutron-gamma discrimination is not too important, P-Therphenyl is used preferentially as it has a higher light output
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Applications
- Selective registration of fast neutrons (n) on γ-radiation background in scintillation pulse-shape discrimination techniques,
- α/β-, n/β, proton/β-selection.
- Neutron field spectrometry.
Pu-Be spectrum for stilbene detector 80 dia. x 50 mm
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Physical Properties of Stilbene
| Molecular weight (g/mol) | 180 |
| Density (g/cm3) | 1.22 |
| H/C - ratio | 0.857 |
| Melting point (°C) | 124 |
| Wavelength of emission maximum (nm) | 390 |
| Refractive index at emission maximum | 1.64 |
| Light output (104 photons/MeV) | 1.4 |
| Decay time (ns) | 3.5 |
| Ratio of ranges in the crystal and anthracene for: | |
| 1.002 |
| 1.014 |
| Radiation degradation (Mrad) | 4.0 |
| Energy resolution(%, 137Cs conversion electrons) | <10 |
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Technical Data
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Dimensions achievable
- Diameter: 1 to 120 mm
- Height: 1 to 100 mm
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Working temperature
- -40 to 60°C
