@article{563042978e3143f9b9f970e3e8348c13,
title = "Experimental Observation of the Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator",
abstract = "We show experimentally that an effect of motion of ions, observed in a plasma-based accelerator, depends inversely on the plasma ion mass. The effect appears within a single wakefield event and manifests itself as a bunch tail, occurring only when sufficient motion of ions suppresses wakefields. Wakefields are driven resonantly by multiple bunches, and simulation results indicate that the ponderomotive force causes the motion of ions. In this case, the effect is also expected to depend on the amplitude of the wakefields, experimentally confirmed through variations in the drive bunch charge.",
author = "{AWAKE Collaboration} and M. Turner and E. Walter and C. Amoedo and N. Torrado and N. Lopes and A. Sublet and M. Bergamaschi and J. Pucek and J. Mezger and {van Gils}, N. and L. Verra and {Zevi Della Porta}, G. and J. Farmer and A. Clairembaud and F. Pannell and E. Gschwendtner and P. Muggli and R. Agnello and C. C. Ahdida and Y. Andrebe and O. Apsimon and R. Apsimon and J. M. Arnesano and V. Bencini and P. Blanchard and K. P. Blum and P. N. Burrows and B. Buttensch{\"o}n and A. Caldwell and M. Chung and D. A. Cooke and C. Davut and G. Demeter and A. C. Dexter and S. Doebert and A. Fasoli and R. Fonseca and I. Furno and E. Granados and M. Granetzny and T. Graubner and O. Grulke and E. Guran and J. Henderson and L. Liang and S. Liu and H. Saberi and F. Silva and L. Silva and G. Xia",
year = "2025",
month = apr,
day = "17",
doi = "10.1103/PhysRevLett.134.155001",
language = "English",
volume = "134",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "15",
}