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Figure 2
Average charge as a function of time at the intensity of (a) I1 = 1.5 ×1018, (b) I2 = 1.5 ×1019, (c) I3 = 1.5 ×1020 and (d) I4 = 1.5 ×1021 W cm-2. The black curve represents the temporal Gaussian envelope of 10 fs FWHM, centered at t = 14 fs.

IUCrJ
Volume 5| Part 6| November 2018| Pages 699-705
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518011442