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Title: Picosecond time-resolved measurements of dense plasma line shifts

Abstract

Picosecond time-resolved x-ray spectroscopy is used to measure the spectral line shift of the 1s2p–1s 2 transition in He-like Al ions as a function of the instantaneous plasma conditions. The plasma temperature and density are inferred from the Al He α complex using a nonlocal-thermodynamic-equilibrium atomic physics model. The experimental spectra show a linearly increasing red shift for electron densities of 1 to 5 × 10 23 cm –3. Furthermore, the measured line shifts are broadly consistent with a generalized analytic line-shift model based on calculations of a self-consistent field ion sphere model.

Authors:
 [1];  [1];  [1];  [2];  [1];  [1];  [3]
  1. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
  2. Prism Computational Sciences, Madison, WI (United States)
  3. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics and Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1372100
Alternate Identifier(s):
OSTI ID: 1363842
Report Number(s):
2017-1, 1345
Journal ID: ISSN 2470-0045; PLEEE8; 2017-1, 2300, 1345
Grant/Contract Number:
NA0001944
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 95; Journal Issue: 6; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Stillman, C. R., Nilson, P. M., Ivancic, S. T., Golovkin, I. E., Mileham, C., Begishev, I. A., and Froula, D. H. Picosecond time-resolved measurements of dense plasma line shifts. United States: N. p., 2017. Web. doi:10.1103/PhysRevE.95.063204.
Stillman, C. R., Nilson, P. M., Ivancic, S. T., Golovkin, I. E., Mileham, C., Begishev, I. A., & Froula, D. H. Picosecond time-resolved measurements of dense plasma line shifts. United States. doi:10.1103/PhysRevE.95.063204.
Stillman, C. R., Nilson, P. M., Ivancic, S. T., Golovkin, I. E., Mileham, C., Begishev, I. A., and Froula, D. H. Tue . "Picosecond time-resolved measurements of dense plasma line shifts". United States. doi:10.1103/PhysRevE.95.063204.
@article{osti_1372100,
title = {Picosecond time-resolved measurements of dense plasma line shifts},
author = {Stillman, C. R. and Nilson, P. M. and Ivancic, S. T. and Golovkin, I. E. and Mileham, C. and Begishev, I. A. and Froula, D. H.},
abstractNote = {Picosecond time-resolved x-ray spectroscopy is used to measure the spectral line shift of the 1s2p–1s2 transition in He-like Al ions as a function of the instantaneous plasma conditions. The plasma temperature and density are inferred from the Al Heα complex using a nonlocal-thermodynamic-equilibrium atomic physics model. The experimental spectra show a linearly increasing red shift for electron densities of 1 to 5 × 1023 cm–3. Furthermore, the measured line shifts are broadly consistent with a generalized analytic line-shift model based on calculations of a self-consistent field ion sphere model.},
doi = {10.1103/PhysRevE.95.063204},
journal = {Physical Review E},
number = 6,
volume = 95,
place = {United States},
year = {Tue Jun 13 00:00:00 EDT 2017},
month = {Tue Jun 13 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on June 13, 2018
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