Fig. 1. Components of flash X-ray radiography system

Fig. 2. Variation of mass energy absorption coefficient with X-ray energy

Fig. 3. Bremsstrahlung spectrum produced by electron beam shooting

Fig. 4. Action mode and relative importance between X/γ ray and matter

Fig. 5. Scorpius flash radiographic accelerator（NTS）

Fig. 6. Epure accelerator

Fig. 7. Dual beam radiography source Cygnus

Fig. 8. Merlin accelerator (AWE)

Fig. 9. Jianguang-I accelerator

Fig. 10. Hawkeye-I accelerator