Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules
Abstract
Here, we investigate the effect of argon impurities on the elastic component of x-ray scattering spectra taken from directly driven beryllium capsule implosions at the OMEGA laser. The plasma conditions were obtained in a previous analysis [18] by fitting the inelastic scattering component. We show that the known argon impurity in the beryllium modifies the elastic scattering due to the larger number of bound electrons. We indeed find significant deviations in the elastic scattering from roughly 1 at.% argon contained in the beryllium. With knowledge of the argon impurity fraction, we use the elastic scattering component to determine the charge state of the compressed beryllium, as the fits are rather insensitive to the argon charge state. Lastly, we discuss how doping small fractions of mid- or high-Z elements into low-Z materials could allow ionization balance studies in dense plasmas.
- Authors:
-
- Univ. of California, Berkeley, CA (United States). Physics Department
- AWE plc, Aldermaston, Reading (United Kingdom); University of Warwick (United Kingdom). Centre for Fusion, Space and Astrophysics, Department of Physics
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- General Atomics, San Diego, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- University of Warwick (United Kingdom). Centre for Fusion, Space and Astrophysics, Department of Physics
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1426137
- Alternate Identifier(s):
- OSTI ID: 1548686
- Report Number(s):
- LLNL-JRNL-742926
Journal ID: ISSN 1574-1818; TRN: US1802228
- Grant/Contract Number:
- AC52-07NA27344; SC0018298; NA0002135; AC52-06NA27279; 18-ERD-033
- Resource Type:
- Accepted Manuscript
- Journal Name:
- High Energy Density Physics
- Additional Journal Information:
- Journal Volume: 26; Journal Issue: C; Journal ID: ISSN 1574-1818
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; Warm-dense-matter; Dense plasmas; X-ray Thomson scattering; Ionization balance
Citation Formats
Saunders, A. M., Chapman, D. A., Kritcher, A. L., Schoff, M., Shuldberg, C., Landen, O. L., Glenzer, S. H., Falcone, R. W., Gericke, D. O., and Döppner, T. Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules. United States: N. p., 2018.
Web. doi:10.1016/j.hedp.2018.02.003.
Saunders, A. M., Chapman, D. A., Kritcher, A. L., Schoff, M., Shuldberg, C., Landen, O. L., Glenzer, S. H., Falcone, R. W., Gericke, D. O., & Döppner, T. Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules. United States. doi:10.1016/j.hedp.2018.02.003.
Saunders, A. M., Chapman, D. A., Kritcher, A. L., Schoff, M., Shuldberg, C., Landen, O. L., Glenzer, S. H., Falcone, R. W., Gericke, D. O., and Döppner, T. Thu .
"Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules". United States. doi:10.1016/j.hedp.2018.02.003. https://www.osti.gov/servlets/purl/1426137.
@article{osti_1426137,
title = {Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules},
author = {Saunders, A. M. and Chapman, D. A. and Kritcher, A. L. and Schoff, M. and Shuldberg, C. and Landen, O. L. and Glenzer, S. H. and Falcone, R. W. and Gericke, D. O. and Döppner, T.},
abstractNote = {Here, we investigate the effect of argon impurities on the elastic component of x-ray scattering spectra taken from directly driven beryllium capsule implosions at the OMEGA laser. The plasma conditions were obtained in a previous analysis [18] by fitting the inelastic scattering component. We show that the known argon impurity in the beryllium modifies the elastic scattering due to the larger number of bound electrons. We indeed find significant deviations in the elastic scattering from roughly 1 at.% argon contained in the beryllium. With knowledge of the argon impurity fraction, we use the elastic scattering component to determine the charge state of the compressed beryllium, as the fits are rather insensitive to the argon charge state. Lastly, we discuss how doping small fractions of mid- or high-Z elements into low-Z materials could allow ionization balance studies in dense plasmas.},
doi = {10.1016/j.hedp.2018.02.003},
journal = {High Energy Density Physics},
number = C,
volume = 26,
place = {United States},
year = {2018},
month = {3}
}
Web of Science
Figures / Tables:

Works referencing / citing this record:
Using time-resolved penumbral imaging to measure low hot spot x-ray emission signals from capsule implosions at the National Ignition Facility
journal, October 2018
- Bishel, D. T.; Bachmann, B.; Yi, A.
- Review of Scientific Instruments, Vol. 89, Issue 10
Figures / Tables found in this record: