P. Dorenbos, C. W. E. von Eijk, H. U. Güdel, K. W. Krämer and E. V. D. van Loef
Scintillator crystals, method for making same, use thereof
Organisation Mondiale de la Propriété Intellectuelle,
Int. patent number WO 01/60944 A2, 23.08.2001                 

Abstract: The invention concerns an inorganic scintillator material of general composition M_1-xCe_xCl₃, wherein: M is selected among lanthanides or lanthanide mixtures, preferably among the elements or mixtures of elements of the group consisting of Y, La, Gd, Lu, in particular among the elements or mixtures of elements of the group consisting of  La, Gd and Lu; and x is the molar rate of substitution of M with cerium, x being not less than 1 mol % and strictly less than 100 mol %. The invention also concerns a method for growing said monocrystalline scintillator material, and the use of said scintillator material as component of a scintillating detector in particular for industrial and medical purposes and in the oil industry.