Figure 3

Causal correlation between intensities of the first four high intensive peaks (I_i) and that of the strongest peak (I₀) for different γ-irradiation doses varying from (0–50 kGy). (●): (I₁); (○): (I₂); (▲): (I₃) and (∆): (I₄). (I₁) > (I₂) > (I₃) > (I₄). The symbols J, M, O and N designate the picks number in Table 1.