PHOSPHOR AND RADIATION DETECTOR Russian patent published in 2018 - IPC C09K11/80 C09K11/78 C09K11/54 C09K11/55 C09K11/62 G01T1/20 G01T3/06 

FIELD: medicine; physics.

SUBSTANCE: inventions relate to medicine, high energy physics and natural resource exploration and can be used in scanners and radiation counters. Phosphors with a garnet structure are co-doped with a monovalent or divalent cation of at least one type in a molar ratio of 7,000 ppm or less relative to all cations. Phosphors can be made in the form of a single crystal and have the following chemical formulae: Ce_xRE_3-xM_5+yO_12+3y/2, where 0.0001≤x≤0.3, 0≤y≤0.5 or -0.5≤y≤0, M is one or more cations selected from Al, Ga and Sc, and RE is one or more cations selected from La, Pr, Gd, Tb, Yb, Y and Lu; Gd_3-x-zCe_xRE_zM_5+yO_12+3y/2, where 0.0001≤x≤0,1, 0<y<0.5 or -0.5<y<0, 0≤z<3, M is one or more cations selected from Al, Ga and Sc, and RE is one or more cations selected from La, Pr, Tb, Yb, Y and Lu. Examples of co-doped cations are Li or Mg. Radiation detector comprises said phospho, which absorbs γ-radiation, X-ray radiation, α-radiation, neutron radiation and high-energy photons and emits optical radiation, as well as a photodetector detecting its emission.

EFFECT: phosphors of the invention have a short fluorescence lifetime, high transparency, light output and luminescence intensity.

13 cl, 3 tbl, 3 dwg, 11 ex