Abstract
Scintillator crystal detectors form the basis for many radiation detection devices. Therefore,
a search for high light yield single crystal scintillators with improved energy resolution, large
volume, and the potential for low cost, is an ongoing process that has increased in recent years due to
a large demand in the area of nuclear isotope identification. Alkaline earth halides, elpasolites and
rare earth halides are very interesting because many compositions from these crystal families
provide efficient Ce3+/ Eu2+ luminescence, good proportionality and good energy resolution. They
also have small band-gap leading to higher light yields. Ce3+and Eu2+ are efficient, and the emission
wavelengths in the 350-500 nm region matches well with PMTs and a new generation of Siphotodiodes.
In this