Fig. 15

Flux mean and flux standard deviation of thermal neutron rays interaction with different concrete compositions (a) Dez (b) Esf (c) Gha(d) Gun (e) Kum (f) Luo (g) Mad (h) Nik (i) Say (j) Suw (k) Zey (l) Concrete_1 (m) Concrete_2 (n) Concrete_3 (o) Concrete_4 (p) Concrete_5 and (q) Concrete_6.