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

Figure 8

Recorded surface velocity (solid blue line) and calculated damping envelope (red dashed line) as a function of time up to 200 μs after beam impact. (a–c) compares three different polycrystalline graphite samples: #1 SGL R6650 (a), #6 SGL R6650 (b), and #3 POCO ZEE (c) at 1 × 10¹¹ ppp (top) and 6 × 10¹¹ ppp (bottom) beam intensity. The energy density provided in each plot indicates the peak energy deposition in the tantalum core averaged over the length of the sample.

(a)

(b)

(c)