The Influence of Lanthanum on Slow Component in the Scintillation Light of BaF2

The electronic structures of pure BaF2 crystal and lanthanum doped BaF2 crystal were calculated in a self-consistent molecular-cluster model. The cluster was embedded in the crystal lattice and the entire system was treated iteratively in the Hartree-Fock-Slater local-density theory. As lanthanum doped BaF2 is concerned, the obtained results revealed that the which is introduced by the lanthanum may contribute to the suppression of the slow component in the scintillation light of BaF2 crystal.