Fig. 3.

Temporal changes of the probe diffraction intensities of the diamond 111- and 220 reflections after irradiation of the pump pulse. (A–C) Dependence of the probe diffraction intensities of the 111- and 220 reflections on the time delay at specific fluences of the pump [(A) (2.3 ± 0.2) $\times$ 10⁴ J cm⁻², (B) (2.7 ± 0.2) $\times$ 10⁴ J cm⁻², and (C) (3.1 ± 0.2) $\times$ 10⁴ J cm⁻²] and the probe [(6.9 ± 0.5) $\times$ 10⁴ J cm⁻²)] pulses. (D and E) Time delays for $I_{111}$ (red) and $I_{220}$ (blue) decreasing to be, respectively, 90% and 85% of $I_{ave111}$ and $I_{ave220}$ for different fluence conditions of the pump [(2.3 ± 0.2) $\times$ 10⁴ J cm⁻², (2.7 ± 0.2) $\times$ 10⁴ J cm⁻², and (3.1 ± 0.2) $\times$ 10⁴ J cm⁻²] and the probe [(5.9 ± 0.5) $\times$ 10⁴ J cm⁻², (6.9 ± 0.5) $\times$ 10⁴ J cm⁻², and (7.9 ± 0.5) $\times$ 10⁴ J cm⁻²] pulses. After evaluating $I_{111}$ and $I_{220}$ for the respective conditions, we performed the linear interpolation of $I_{111}$ and $I_{220}$ between the measured conditions of time delays and determined the values of the time delays shown in D and E.