5 September 2008 Strontium iodide scintillators for high energy resolution gamma ray spectroscopy
Author Affiliations +
Recently SrI2, a scintillator patented by Hofstadter in 1968, has been rediscovered and shown to possess remarkable scintillation properties. The light output of SrI2:Eu2+ has been measured to be even higher than previously observed and exceeds 120,000 photons/MeV, making it one of the brightest scintillators in existence. The crystal also has excellent energy resolution of less than 3% at 662 keV. The response is highly linear over a wide range of gamma ray energies. The emission of SrI2:Eu2+ and SrI2:Ce3+/Na+ is well-matched to both photomultiplier tubes and blue-enhanced silicon photodiodes. While SrI2:Eu2+ is relatively slow, SrI2:Ce3+/Na+ has a fast response. SrI2 crystals with many different dopant concentrations have been grown and characterized. In this presentation, crystal growth techniques as well as the effects of dopant concentration on the scintillation properties of SrI2, over the range 0.5% to 8% Eu2+ and 0.5% to 2% Ce3+/Na+, will be discussed in detail.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cody M Wilson, Cody M Wilson, Edgar V. van Loef, Edgar V. van Loef, Jarek Glodo, Jarek Glodo, Nerine Cherepy, Nerine Cherepy, Giulia Hull, Giulia Hull, Stephen Payne, Stephen Payne, Woon-Seng Choong, Woon-Seng Choong, William Moses, William Moses, Kanai S. Shah, Kanai S. Shah, "Strontium iodide scintillators for high energy resolution gamma ray spectroscopy", Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 707917 (5 September 2008); doi: 10.1117/12.806291; https://doi.org/10.1117/12.806291

Back to Top