Gamma Ray Scintillators via BaF2:Ce Nanopowders

Scintillators Photomultipliers Crystal Scintillators Photomultipliers Gamma Ray Gamma Ray Scattered : Light Emitted Gamma Ray Absorbed : Light Emitted

Optical simulation and experimental measurement of gamma ray energy spectrum of plastic scintillators with different sizes

The application of large plastic scintillators is widely increasing in the different areas of industry, medicine and security due to technical and economic advantages. One of the main disadvantages of these detectors is the unknown position of Compton edge at gamma ray spectrum. In this research, GEANT4/GATE code has been used to simulate the gamma ray spectrum for different volumes of large pl...

Measurements of Separate Neutron and Gamma-Ray Coincidences with Liquid Scintillators and Digital Pulse Shape Discrimination

..................................................................................................................... vii

Thin scintillators for ultrafast hard X-ray imaging

A multilayer thin-scintillator concept is described for ultrafast imaging. The individual layer thickness is determined by the spatial resolution and light attenuation length, the number of layers is determined by the overall efficiency. By coating the scintillators with a high quantum-efficiency photocathode, single X-ray photon detection can be achieved using fast scintillators with low light...

Gamma Ray Bursts via emission of axion-like particles

The Pseudo-Goldstone Boson (PGB) emission could provide a very efficient mechanism for explaining the cosmic Gamma Ray Bursts (GRBs). The PGBs could be produced during the merging of two compact objects like two neutron stars or neutron star black hole, and then decay into electron-positron pairs and photons at distances ∼ 100− 1000 km. In this way, a huge energy (up to more than 10 erg) can be...