Shake-off in XFEL heated solid density plasma
Plasma Physics
2025-01-29 v1 Atomic Physics
Abstract
In atoms undergoing ionisation, an abrupt re-arrangement of free and bound electrons can lead to the ejection of another bound electron (shake-off). The spectroscopic signatures of shake-off have been predicted and observed in atoms and solids. Here, we present the first observation of this process in a solid-density plasma heated by an x-ray free electron laser. The results show that shake-off of L-shell electrons persists up to temperatures of 10 eV at solid density, and follow the probability predicted for solids. This work shows that shake-off should be included in plasma models for the correct interpretation of emission spectra.
Cite
@article{arxiv.2501.16970,
title = {Shake-off in XFEL heated solid density plasma},
author = {G. O. Williams and L. Ansia and M. Makita and P. Estrela and M. Hussain and T. R. Preston and J. Chalupský and V. Hajkova and T. Burian and M. Nakatsutsumi and J. Kaa and Z. Konopkova and N. Kujala and K. Appel and S. Göde and V. Cerantola and L. Wollenweber and E. Brambrink and C. Baehtz and J-P. Schwinkendorf and V. Vozda and L. Juha and H. -K. Chung and P. Vagovic and H. Scott and P. Velarde and U. Zastrau and M. Fajardo},
journal= {arXiv preprint arXiv:2501.16970},
year = {2025}
}