Potassium cryolite type rare earth scintillating material, preparation method thereof and detection equipment

The invention discloses an potassium cryolite type rare earth scintillating material. The chemical general formula of the potassium cryolite type rare earth scintillating material is Cs2LiRE (1-x-y) PrxCeyBrzX6-z. Wherein RE is one or more of scandium, yttrium, lanthanum, gadolinium and lutetium, X is one of chlorine or iodine, x is more than 0 and less than or equal to 0.01, y is more than 0 and less than or equal to 0.1, and z is more than 0 and less than or equal to 6. By adding low-concentration Pr < 3 + > active ions, the difference between neutrons and gamma waveforms is expanded based on the rapid decay time of the Pr < 3 + > active ions, so that the neutron/gamma discrimination capability is remarkably improved; the rare earth potassium cryolite scintillating material has excellent neutron/gamma discrimination capability, high light output and excellent energy resolution, and has comprehensive performance obviously superior to that of the existing Ce < 3 + >-activated rare earth potassium cryolite sci