Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation
Abstract
The ion-kinetic energy throughout K emission in a stagnating plasma was determined from the Doppler contribution to the shapes of optically thin lines. X-ray spectroscopy with a remarkably high spectral resolution, together with simultaneous imaging along the pinch, was employed. Over the emission period, a drop of the ion-kinetic energy down to the electron thermal energy was seen. Axially resolved time-dependent electron-density measurements and absolute intensities of line and continuum allowed for investigating, for the first time, each segment of the pinch, the balance between the ion-kinetic energy at the stagnating plasma, and the total radiation emitted. Within the experimental uncertainties, the ion-kinetic energy is shown to account for the total radiation.
- Authors:
- Weizmann Institute of Science, Rehovot 76100 (Israel)
- (Germany)
- (Israel)
- (United States)
- Publication Date:
- OSTI Identifier:
- 20957753
- Resource Type:
- Journal Article
- Resource Relation:
- Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.98.115001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRON DENSITY; ELECTRON EMISSION; ELECTRONS; ENERGY BALANCE; IONS; KINETIC ENERGY; LINEAR Z PINCH DEVICES; PLASMA; RESOLUTION; TIME DEPENDENCE; X-RAY SPECTROSCOPY
Citation Formats
Kroupp, E., Osin, D., Starobinets, A., Fisher, V., Bernshtam, V., Maron, Y., Uschmann, I., Foerster, E., Fisher, A., Deeney, C., Friedrich-Schiller University, Jena, Faculty of Physics, Technion-Israeli Institute of Technology, Haifa, and Sandia National Laboratories, Albuquerque, New Mexico. Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVLETT.98.115001.
Kroupp, E., Osin, D., Starobinets, A., Fisher, V., Bernshtam, V., Maron, Y., Uschmann, I., Foerster, E., Fisher, A., Deeney, C., Friedrich-Schiller University, Jena, Faculty of Physics, Technion-Israeli Institute of Technology, Haifa, & Sandia National Laboratories, Albuquerque, New Mexico. Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation. United States. doi:10.1103/PHYSREVLETT.98.115001.
Kroupp, E., Osin, D., Starobinets, A., Fisher, V., Bernshtam, V., Maron, Y., Uschmann, I., Foerster, E., Fisher, A., Deeney, C., Friedrich-Schiller University, Jena, Faculty of Physics, Technion-Israeli Institute of Technology, Haifa, and Sandia National Laboratories, Albuquerque, New Mexico. Fri .
"Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation". United States.
doi:10.1103/PHYSREVLETT.98.115001.
@article{osti_20957753,
title = {Ion-Kinetic-Energy Measurements and Energy Balance in a Z-Pinch Plasma at Stagnation},
author = {Kroupp, E. and Osin, D. and Starobinets, A. and Fisher, V. and Bernshtam, V. and Maron, Y. and Uschmann, I. and Foerster, E. and Fisher, A. and Deeney, C. and Friedrich-Schiller University, Jena and Faculty of Physics, Technion-Israeli Institute of Technology, Haifa and Sandia National Laboratories, Albuquerque, New Mexico},
abstractNote = {The ion-kinetic energy throughout K emission in a stagnating plasma was determined from the Doppler contribution to the shapes of optically thin lines. X-ray spectroscopy with a remarkably high spectral resolution, together with simultaneous imaging along the pinch, was employed. Over the emission period, a drop of the ion-kinetic energy down to the electron thermal energy was seen. Axially resolved time-dependent electron-density measurements and absolute intensities of line and continuum allowed for investigating, for the first time, each segment of the pinch, the balance between the ion-kinetic energy at the stagnating plasma, and the total radiation emitted. Within the experimental uncertainties, the ion-kinetic energy is shown to account for the total radiation.},
doi = {10.1103/PHYSREVLETT.98.115001},
journal = {Physical Review Letters},
number = 11,
volume = 98,
place = {United States},
year = {Fri Mar 16 00:00:00 EDT 2007},
month = {Fri Mar 16 00:00:00 EDT 2007}
}
-
The time history of the local ion kinetic energy in a stagnating plasma was determined from Doppler-dominated line shapes. Using independent determination of the plasma properties for the same plasma region, the data allowed for inferring the time-dependent ion temperature, and for discriminating the temperature from the total ion kinetic energy. It is found that throughout most of the stagnation period the ion thermal energy constitutes a small fraction of the total ion kinetic energy; the latter is dominated by hydrodynamic motion. Both the ion hydrodynamic and thermal energies are observed to decrease to the electron thermal energy by themore »
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