Low-cost scintillator materials are attracting increasing interest for their potential use in radiation detection and imaging applications, including positron emission tomography (PET) 1,2.

We present a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Each annihilation photon has an energy that is five orders of ...

X-ray backscatter AIT uses a narrow beam of X-ray photons with energies, hv, less than 100 keV. 2 There are five basic interactions that can occur as X rays penetrate material. These are the ...