Organic Scintillation Crystals
Organic scintillation crystals are polycyclic aromatic hydrocarbon compounds that exist in single crystalline form. They are typically grown from solution or by melt-based methods such as the Bridgman technique. Under ionizing radiation, they emit scintillation light in the wavelength region of 325nm (Naphthalene) to 650nm (Rubrene) with a decay time of the order of 1 to 50ns. Some organic crystals can perform neutron/gamma pulse shape discrimination (PSD) such as Stilbene and 9,10-Diphenylanthracene (DPA). At RMD, we offer organic crystals of 9,10-Diphenylanthracene (DPA) and 9-Phenylcarbazole (PCz), grown from solution. Other organic crystals are available upon request.
9-Phenylcarbazole (PCz)
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Size: Up to 10 in3
- Chemical formula: C18H13N
- Density: 1.24 g/cm3
- Emission wavelength: Typically around 450 nm with a light yield of 20,000 ph/MeV
- Figure of Merit for neutron/gamma PSD: > 2.0 at 1 MeVee
- Operating temperature: Not to exceed 50°C
- Care: The crystals are relatively rugged, but still should be handled with care
9,10-Diphenylanthracene (DPA)
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Size: Available in sizes up to 5 in3
- Chemical formula: C26H18
- Density: 1.22 g/cm3
- Emission wavelength: 468 nm with a light yield of 14,000 ph/MeV
- Figure of Merit for neutron/gamma PSD: > 2.0 at 1 MeVee
- Operating temperature: Not to exceed 120°C
- Care: Crystals are very brittle and need to be handled with care