Multi-energy radiography on the basis of "scintillator-photodiode"   detectors
  For reconstruction of the spatial structure and thicknesses of complex objects and materials, it is proposed to use multi-radiography with detection of X-ray or gamma-radiation by combined detector arrays of scintillator-photodiode type. Experimental studies have been carried out of the energy dependence of sensitivity of dual-energy inspection systems based on scintillators $ZnSe(Te)$ and $CsI(Tl)$. 
S.V. Naydenov, V.D. Ryzhikov, B.V. Grinyov, E.K. Lisetskaya, D.N.   Kozin, A.D. Opolonin