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![[Figure 7]](tv5062fig7mag.jpg)
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Figure 7
A time series of single-bunch phase-contrast radiographs of copper wire explosion in a water-filled capillary under sudden current discharge observed with the NUV X-ray microscope and 10× magnification (i.e. 3.16 µm per pixel) at 0.7 Mfps (1/1.42 µs). The radiographs were captured during a 4-bunch filling mode (7.5 mA per bunch). Top right: the formation of a water vaporization layer due to heating can be observed. Middle left: the onset of unduloid formation can be noticed. Middle right: this unduloid formation shows an indication of several droplet-like structures at pre-failure. Bottom left: cavitation bubble formation in surrounding water from localized failure and plasma formation can be noticed. Bottom right: the complete wire separation and fragmentation of the glass capillary due to energy discharge into the surroundings. (The radiographs are background corrected with a pseudo-flat field.) Timestamps of depicted radiographs: top left = t0; top right = t0 + 21.3 µs; middle left = t0 + 35.5 µs; middle right = t0 + 42.6 µs; bottom left = t0 + 44 µs; and bottom right = t0 + 45.4 µs. |
![[Figure 7]](tv5062fig7.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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