Reply to: Reconsidering X-ray plasmons

• Published in: Nature photonics Vol. 13; no. 11; pp. 751 - 753
• Main Authors: Fletcher, L. B., Lee, H. J., Döppner, T., Galtier, E., Nagler, B., Heimann, P., Fortmann, C., LePape, S., Ma, T., Millot, M., Pak, A., Turnbull, D., Chapman, D. A., Gericke, D. O., Vorberger, J., White, T., Gregori, G., Wei, M., Barbrel, B., Falcone, R. W., Kao, C.-C., Nuhn, H., Welch, J., Zastrau, U., Neumayer, P., Hastings, J. B., Glenzer, S. H.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01-11-2019; Nature Publishing Group
• Subjects: 639/624/400/1106; 639/766/1960/1135; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Applied and Technical Physics; Laser-produced plasmas; Matters Arising; Physics; Physics and Astronomy; Plasmons; Quantum Physics; X-rays
• ISSN: 1749-4885; 1749-4893
• DOI: 10.1038/s41566-019-0533-0

In this response we show a spectral and X-ray intensity analysis that unequivocally proves a spectrally resolved plasmon reported in ref. 1. The analysis takes the f-sum rules into account, is consistent with the independently and simultaneously measured wavenumber-resolved X-ray scattering signal and compares well with advanced elastic feature modelling, including density functional theory for molecular dynamics (DFTMD) as well as pseudoatom molecular dynamics.