Patent ID: 8062419

Claim:
A method of growing a single-crystalline scintillator material from a melt having a composition of the formula, Lu 2(1-x-y) Ce 2x A 2y SiO 5 , wherein A consists essentially of Ca, Mg, Sr, Zn or Cd or any combination thereof, the method comprising: selecting a fluorescence decay time between about 30 ns and about 50 ns, inclusive, to be achieved for the grown single-crystalline material; based on the decay time to be achieved, determining a relative value between x and y, wherein x is greater than or equal to 0.00001 and less than or equal to 0.002, y is greater than or equal to 0.00001 and less than or equal to 0.1, and y is about three times x or greater, so as to achieve stable growth of the single-crystalline scintillator material from the melt; and growing a single-crystalline scintillator material from the melt with the relative value between x and y.