Effect of the shot-to-shot variation on charge migration induced by sub-fs x-ray free-electron laser pulses - Grell,G; Guo,Z; Driver,T; Decleva,P; Plesiat,E; Picon,A; Gonzalez-Vazquez,J; Walter,P; Marangos,JP; Cryan,JP; Marinelli,A; Palacios,A; et al. (PHYSICAL REVIEW RESEARCH, 2023)