A plastic scintillating fiber capable of reducing modal dispersion and improving the accuracy of identifying a position which radiation passes through. A plastic scintillating fiber includes a core and a cladding that covers an outer periphery of the core and has a lower refractive index than the core. The core uniformly contains a radiation-emitting fluorescent agent and has a refractive index distribution where the refractive index of the core is highest at a center of a cross-section and becomes lower in a parabolic manner with distance from the center toward an outer periphery.

A plastic scintillating fiber capable of reducing modal dispersion and improving the accuracy of identifying a position which radiation passes through. A plastic scintillating fiber includes a core and a cladding that covers an outer periphery of the core and has a lower refractive index than the core. The core uniformly contains a radiation-emitting fluorescent agent and has a refractive index distribution where the refractive index of the core is highest at a center of a cross-section and becomes lower in a parabolic manner with distance from the center toward an outer periphery.

A scintillator array includes: a structure having scintillator segments and a first reflective layer, the first reflective layer being provided between the scintillator segments and being configured to reflect light, and the scintillator segments having a sintered compact containing a rare earth oxysulfide phosphor; and a layer having a second reflective layer provided above the structure, the second reflective layer being configured to reflect light. The first reflective layer has a portion extending into the layer.

A ceramic lithium indium diselenide or like radiation detector device formed as a pressed material that exhibits scintillation properties substantially identical to a corresponding single crystal growth radiation detector device, exhibiting the intrinsic property of the chemical compound, with an acceptable decrease in light output, but at a markedly lower cost due to the time savings associated with pressing versus single crystal growth.

A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.

A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.

A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.

The present disclosure relates to a method for detecting incoming radiation having a plurality of differing properties including at least one of differing types, differing energies or differing incoming directions. The method involves using a scintillator structure formed from first and second dissimilar scintillator materials, where the first and second dissimilar scintillator materials emit first and second different colors of light in response to the incoming radiation. A first light detector is used for detecting light having the first color, and a second light detector is used for detecting light having the second color. A first output signal is generated in response to the detection of light having the first color, and a second output signal is generated in response to detecting light having the second color. The first and second output signals are then analyzed to determine at least one property of the incoming radiation.

Hybrid material for plastic scintillation measurement comprising: a polymeric matrix; and a fluorescent mixture incorporated in the polymeric matrix and comprising, with respect to the total number of moles of primary fluorophore in the incorporated fluorescent mixture, i) from 95.6 molar % to 99.6 molar % of a main primary fluorophore consisting of naphthalene and ii) from 0.4 molar % to 20 molar % of an additional primary fluorophore. The decay constant of the fluorescence of the hybrid material is intermediate between that of a fast plastic scintillator material and of a slow plastic scintillator material. Further, they can be chosen over a wide range. The invention also relates to an associated part, device and item of equipment, to their processes of manufacture or their methods of measurement.

Embodiments of composite scintillators which may include a scintillator material encapsulated in a plastic matrix material and their methods of use are described.