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Figure 1
(a) Comparison of energy spectra of the electron states in isolated atoms and atoms in a crystal; (b) schematic estimation of the role of free electrons in the ionization dynamics. Here [f({\bf p})] is the distribution function of the free electrons, Rmfp is the electron mean free path, and Lext is the extinction length.

IUCrJ
Volume 1| Part 6| October 2014| Pages 402-417
ISSN: 2052-2525
doi:10.1107/S2052252514018156