Patterned radiation-sensing thermoplastic composite panels

A method of making a patterned scintillator panel comprising:

• forming a scintillator layer by melt extrusion, the extruded scintillator layer comprising extruding thermoplastic scintillator composite fibers comprising thermoplastic particles comprising a thermoplastic polyolefin and a scintillator material;
• and
• arranging the extruded thermoplastic scintillator composite fibers into a columnar array to form the patterned scintillator layer, where total internal reflection for optical radiation occurs at the thermoplastic scintillator composite fibers.

A patterned scintillator panel comprising:

• an extruded scintillator layer comprising extruded thermoplastic scintillator composite fibers comprising a thermoplastic polyolefin and a scintillator material, wherein the scintillator layer comprises thermoplastic scintillator composite fibers arranged into a columnar array without gaps between the thermoplastic scintillator composite fibers in the columnar array.