Dynamic Response of Graphitic Targets with Tantalum Cores Impacted by Pulsed 440-GeV Proton Beams

Figure 6

Frequency analysis of the radial surface velocity of target #1 R6650 after impact with 1 × 10¹¹ ppp within the first 200 μs. The power density as a function of frequency clearly shows the multiple high frequency signals (around 1000 kHz) responsible for the amplitude modulation (a). Continuous wavelet analysis of the absolute radial surface velocity. Color coding represents the values of the normalized absolute radial surface velocity (b).

(a)

(b)