Measurements of the momentum-dependence of plasmonic excitations in matter around 1 Mbar using an X-ray free electron laser
Abstract
We present measurements of the plasmon shift in shock-compressed matter as a function of momentum transfer beyond the Fermi wavevector using an X-ray Free Electron Laser. We eliminate the elastically scattered signal retaining only the inelastic plasmon signal. Our plasmon dispersion agrees with both the random phase approximation (RPA) and static Local Field Corrections (sLFC) for an electron gas at both zero and finite temperature. Further, we find the inclusion of electron-ion collisions through the Born-Mermin Approximation (BMA) to have no effect. Whilst we cannot distinguish between RPA and sLFC within our error bars, our data suggest that dynamic effects should be included for LFC and provide a route forward for higher resolution future measurements.
- Authors:
-
- European X-ray Free-Electron Laser (XFEL) GmbH, Hamburg (Germany)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Bayreuth (Germany). Bayerisches Geoinstitut BGI; Univ. of Oxford (United Kingdom). Dept. of Earth Sciences
- European X-ray Free-Electron Laser (XFEL) GmbH, Hamburg (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. Rostock, Rostock (Germany). Inst. für Physik
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1493342
- Grant/Contract Number:
- AC02-76SF00515; 654220; SF00515; FWP100182
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 1; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Preston, T. R., Appel, K., Brambrink, E., Chen, B., Fletcher, L. B., Fortmann-Grote, C., Glenzer, S. H., Granados, E., Göde, S., Konôpková, Z., Lee, H. J., Marquardt, H., McBride, E. E., Nagler, B., Nakatsutsumi, M., Sperling, P., Witte, B. B. L., and Zastrau, U. Measurements of the momentum-dependence of plasmonic excitations in matter around 1 Mbar using an X-ray free electron laser. United States: N. p., 2019.
Web. doi:10.1063/1.5070140.
Preston, T. R., Appel, K., Brambrink, E., Chen, B., Fletcher, L. B., Fortmann-Grote, C., Glenzer, S. H., Granados, E., Göde, S., Konôpková, Z., Lee, H. J., Marquardt, H., McBride, E. E., Nagler, B., Nakatsutsumi, M., Sperling, P., Witte, B. B. L., & Zastrau, U. Measurements of the momentum-dependence of plasmonic excitations in matter around 1 Mbar using an X-ray free electron laser. United States. https://doi.org/10.1063/1.5070140
Preston, T. R., Appel, K., Brambrink, E., Chen, B., Fletcher, L. B., Fortmann-Grote, C., Glenzer, S. H., Granados, E., Göde, S., Konôpková, Z., Lee, H. J., Marquardt, H., McBride, E. E., Nagler, B., Nakatsutsumi, M., Sperling, P., Witte, B. B. L., and Zastrau, U. Mon .
"Measurements of the momentum-dependence of plasmonic excitations in matter around 1 Mbar using an X-ray free electron laser". United States. https://doi.org/10.1063/1.5070140. https://www.osti.gov/servlets/purl/1493342.
@article{osti_1493342,
title = {Measurements of the momentum-dependence of plasmonic excitations in matter around 1 Mbar using an X-ray free electron laser},
author = {Preston, T. R. and Appel, K. and Brambrink, E. and Chen, B. and Fletcher, L. B. and Fortmann-Grote, C. and Glenzer, S. H. and Granados, E. and Göde, S. and Konôpková, Z. and Lee, H. J. and Marquardt, H. and McBride, E. E. and Nagler, B. and Nakatsutsumi, M. and Sperling, P. and Witte, B. B. L. and Zastrau, U.},
abstractNote = {We present measurements of the plasmon shift in shock-compressed matter as a function of momentum transfer beyond the Fermi wavevector using an X-ray Free Electron Laser. We eliminate the elastically scattered signal retaining only the inelastic plasmon signal. Our plasmon dispersion agrees with both the random phase approximation (RPA) and static Local Field Corrections (sLFC) for an electron gas at both zero and finite temperature. Further, we find the inclusion of electron-ion collisions through the Born-Mermin Approximation (BMA) to have no effect. Whilst we cannot distinguish between RPA and sLFC within our error bars, our data suggest that dynamic effects should be included for LFC and provide a route forward for higher resolution future measurements.},
doi = {10.1063/1.5070140},
journal = {Applied Physics Letters},
number = 1,
volume = 114,
place = {United States},
year = {Mon Jan 07 00:00:00 EST 2019},
month = {Mon Jan 07 00:00:00 EST 2019}
}
Web of Science
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