Abstracts 2001

Abstract of Publication No. 399

E. V. D. van Loef, P. Dorenbos, C. W. E. van Eijk, K. Krämer and H. U. Güdel
Scintillation Properties of LaCl3:Ce3+ Crystals: 
Fast, Efficient and High-Energy Resolution Scintillators

IEEE Trans. Nucl. Sci. 48, 341-345 (2001)      Full Text (PDF)      DOI-Link     

Abstract: The scintillation properties of LaCl3 doped with different Ce3+ concentrations studied by means of optical, X-ray, and g-ray excitation are presented. Under optical and g-ray excitation, Ce3+ emission is observed peaking at 330 and 352 nm. For LaCl3 doped with 2%, 4%, 10%, and 30% Ce3+ and pure CeCl3, we measured a light yield of 460003000 photons per MeV of absorbed g-ray energy. The scintillation decay curve con be described by three decay components: short (t = 25 ns), intermediate (t = 200-800 ns), and long (t = 0.8-14 ms). The contribution of the short decay component to the total light yield increases with Ce3+ concentration: ranging from 10% for LaCl3: 2% Ce3+ to 69% for pure CeCl3. An energy resolution (full-width half-maximum over peak position) for the 662-keV full energy peak of 3.50.4%, 3.50.4%, 3.10.3%, 3.30.3%, and 3.40.3%, respectively, was observed for LaCl3: 2%, 4%, 10%, 30% Ce3+ and pure CeCl3.

Last modified: 13.12.11 by Gabriela Frei