D. Meiss et al., LUMINESCENCE AND CHARGE TRAPPING IN THE SYSTEMS LU2-XYXSIO5CEYZR0.00075 AND LU2-XYXSIO5CEYSM0.001, Physica status solidi. a, Applied research, 142(1), 1994, pp. 237-244
Coactivation of oxyorthosilicates of X2 type of the system Lu2-xYxSiO5
:Ce(y)3+ with either Sm3+ or Zr4+ introduces charge trapping defect ce
ntres. These centres are able to store carriers after X-ray irradiatio
n. Photostimulation and/or thermal stimulation results in radiative re
laxation of the activator Ce3+. Models for the storage mechanism are s
uggested.