Organic Crystals

Organic Crystals

Organic crystals are polycyclic aromatic hydrocarbon compounds that exist in single crystalline form. They are typically obtained by growth from solution or by melt-based methods such as the Vertical Bridgman technique. Under ionizing radiation, they emit scintillation light in the wavelength region of 325 nm (Naphthalene) to 650 nm (Rubrene) with a decay time of the order of 1 to 50 ns. Some organic crystals can perform neutron/gamma pulse shape discrimination (PSD) such as Stilbene and 9,10-Diphenylanthracene (DPA). At RMD, we offer crystals of DPA and 9-phenylcarbazole (PCz), grown from solution. Other organic crystals may be available upon request.

Technologies:

9,10-Diphenylanthracene (DPA) 

Crystals of 9,10-diphenylanthracene (DPA) are grown by the solution growth technique at RMD and are available in sizes of up to 5 inch3. The crystals are very brittle and need to be handled with care. The chemical formula is C26H18. The density of DPA is 1.22 g/cm3. The emission wavelength of DPA is 468 nm with a light yield of 14,000 ph/MeV and a Figure of Merit for neutron/gamma PSD that is > 2.0 at 1 MeVee. The operating temperature range for DPA crystals should not exceed 120°C.

 

9,10-Diphenylanthracene

 

9-Phenylcarbazole (PCz)

Crystals of 9-phenylcarbazole (PCz) are grown by the solution growth technique at RMD and are available in sizes of up to 10 inch3. The crystals are relatively rugged, but still should be handled with care. The chemical formula is C18H13N. The density of PCz is 1.24 g/cm3. The emission wavelength of PCz typically is around 450 nm with a light yield of 20,000 ph/MeV and a Figure of Merit for neutron/gamma PSD that is > 2.0 at 1 MeVee. The operating temperature range for PCz crystals should not exceed 50°C.

PCz

 

 

 

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