shining, terbiumaktiviertes borate, oscilloscope screen with such a borate and niederdruckquecksilberdampfentladungslampe with such a screen.

摘要

Luminescent terbium-activated alkaline earth metal rare earth metal borate having a monoclinic crystal structure and being defined by the formula M3Ln1-xTbx(BO3)3 in which M is at least one of the elements Ba, Sr and Ca of which up to 34 mol % may be replaced by Mg, in which Ln is at least one of the elements La, Gd, Y and Sc and in which 0.005 /= x /= 1.