In these years a great interest has been growing for the cerium-doped lanthanum crystals due to their high scintillation yield well-matched to present photocathodes, which makes them promising for nuclear medical imaging. In this paper we report on the LaCl3:Ce scintillation response, with the aim to evaluate its degree of non-proportionality. Light yields of LaCl 3:Ce, expressed in photoelectron numbers, were measured for X-ray and γ-energies ranging between 13.4 and 1332keV. In the same energy range, the energy resolution was also measured. The test was performed with a 25×25×3mm3 crystal mounted on a Hybrid Photomultiplier Tube (HPMT) PP0470 by DEP. We observed the presence of two different ranges of LaCl 3:Ce light yield response, respectively, for energies higher than 22Na-511keV and for energies lower than 57Co-122keV. A sensible difference of light yield was observed in these two regions. © 2005 Elsevier B.V. All rights reserved.
Study of LaCl3:Ce light yield proportionality with a hybrid photomultiplier tube / C., Dambrosio; F., De Notaristefani; G., Hull; V., Orsolini Cencelli; Pani, Roberto. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 556:1(2006), pp. 187-191. [10.1016/j.nima.2005.10.001]
Study of LaCl3:Ce light yield proportionality with a hybrid photomultiplier tube
PANI, Roberto
2006
Abstract
In these years a great interest has been growing for the cerium-doped lanthanum crystals due to their high scintillation yield well-matched to present photocathodes, which makes them promising for nuclear medical imaging. In this paper we report on the LaCl3:Ce scintillation response, with the aim to evaluate its degree of non-proportionality. Light yields of LaCl 3:Ce, expressed in photoelectron numbers, were measured for X-ray and γ-energies ranging between 13.4 and 1332keV. In the same energy range, the energy resolution was also measured. The test was performed with a 25×25×3mm3 crystal mounted on a Hybrid Photomultiplier Tube (HPMT) PP0470 by DEP. We observed the presence of two different ranges of LaCl 3:Ce light yield response, respectively, for energies higher than 22Na-511keV and for energies lower than 57Co-122keV. A sensible difference of light yield was observed in these two regions. © 2005 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
