Details

Autor(en) / Beteiligte

• Alekhin, Mikhail S
• de Haas, Johan TM
• Kramer, Karl W
• Dorenbos, Pieter

Titel

Scintillation Properties of and Self Absorption in rm SrI 2 : rm Eu 2

Ist Teil von

• IEEE transactions on nuclear science, 2011-10, Vol.58 (5), p.2519-2527

Erscheinungsjahr

2011

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• The scintillation properties of pure rm SrI 2 and rm SrI 2 doped with 0.5%, 0.86%, 2%, and 5% europium were studied. Different techniques were used to measure gamma -ray excited pulse-height and scintillation decay time spectra, and to perform X-ray excited and optically excited emission spectroscopy. rm Eu 2 + emission and trapped exciton (TE) emission was observed in rm SrI 2 : rm Eu 2 + samples. These emissions were studied as a function of temperature, Eu concentration, and sample size. A spectral overlap was observed between rm Eu 2 + excitation and emission spectra, the amount of overlap depends on temperature. The light yield, energy resolution and luminescence decay profiles reveal also a dependence on temperature, sample size, and Eu concentration. The observations were analyzed and interpreted in terms of two separate models. One model consists of the relation between TE and rm Eu 2 + emission and the other deals with self absorption processes.