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Figure 3
Focus size dependence on incoming pulse duration (T0). Initial Gaussian beam with 755 µm FWHM, 12 keV photon energy propagating through a Be lens with f = 3 m. (a) Radial cut of time integrated intensity at the focus for different T0. (b) Spatial FWHM of the beam at the focus as a function of the incoming pulse duration T0. The limit for infinite long pulses is 181.2 nm FWHM. (c) Maximum power density at the focus. Peak at T0 ≃ 350 as initial pulse duration.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 1| January 2026| Pages 52-62
https://doi.org/10.1107/S1600577525008975
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