Fabrication of a scintillator material of elpasolite type

A crystalline scintillator material, wherein the crystalline scintillator material:

• is doped with an element that activates scintillation;
• has a structure of an elpasolite type of a theoretical composition A2BC(1-y)MyX(6-y);
• and has a real formula AaBbCcMmXx, wherein
• A is chosen from among Cs, Rb, K, Na;
• B is chosen from among Li, K, Na and comprises Li;
• C is chosen from among the rare earths, Al, Ga;
• M is chosen from among the alkaline earths;
• and
• X is chosen from among F, Cl, Br, I and comprises Cl or Br or I;
• y representing an atomic fraction of substitution of C by M and being in a range extending from 0 to 0.05, a, b, c, m, and x representing respective atomic fractions of A, B, C, M, and X, a 2b/a ratio being in a range extending from 0.97 to 1.4, wherein the crystalline scintillator material is monocrystalline.

A monocrystalline scintillator material, wherein the monocrystalline scintillator material

• is doped with an element that activates scintillation;
• has a structure of an elpasolite type of a theoretical composition A2BC(1-y)MyX(6-y);
• and has a real formula AaBbCcMmXx, wherein
• A comprises Cs;
• B comprises Li;
• C is chosen from among the rare earths, Al, Ga;
• M is chosen from among the alkaline earths;
• and
• X comprises Cl or Br;
• y representing an atomic fraction of substitution of C by M and being in a range extending from 0 to 0.05, a, b, c, m, and x representing respective atomic fractions of A, B, C, M, and X, a 2b/a ratio being in a range extending from 0.97 to 1.4.