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Title: Electron temperature and electron number density measurements in laser ablation Z-pinch experiments of Al 2 O 3

Abstract

Aluminum oxide (Al 2O 3) plasma was generated using the Ti:Sapphire/Nd:glass laser and Z-pinch pulse-power generator at the University of Nevada, Reno, Nevada Terawatt Facility. To determine the electron temperature, we use the Boltzmann plot method for the transitions (Al III 4d 2D 3/2 → 4p 2P 1/2) at 451.2564 nm, (Al III 4d 2D 5/2 → 4p 2P 3/2) at 452.9194 nm, (Al III 4p 2P 3/2 → 4s 2S 1/2) at 569.6603, and (Al III 4p 2P 1/2 → 4s 2S 1/2) at 572.2728 nm. Simultaneously, Mach–Zehnder laser interferometry was used to measure the electron number density. We compared simulated spectra obtained from PrismSPECT with electron number density and temperature measurements, and the electron temperature was found to range from 1.8 to 2.8 eV, while the electron number density was found to range from 2.3 × 10 17 to 6.9 × 10 17 cm −3 early in the pinched plasma formation.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [3];  [3]
  1. Nevada National Security Site, Livermore Operations, Livermore, California 95440, USA
  2. Nevada National Security Site, New Mexico Operations, Albuquerque, New Mexico 87501, USA
  3. Department of Physics and Nevada Terawatt Facility, University of Nevada, Reno, Nevada 89557, USA
Publication Date:
Research Org.:
Nevada National Security Site/Mission Support and Test Services LLC; Las Vegas, NV (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1561125
Report Number(s):
DOE/NV/03624-0310
Journal ID: ISSN 1070-664X
DOE Contract Number:  
DE-NA0003624
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 26; Journal Issue: 8; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; aluminum oxide, plasma, spectroscopy, laser ablation Z-pinch, Z-pinch, electron number density, electron temperature

Citation Formats

Dutra, E. C., Koch, J. A., Presura, R., Wiewior, P., and Covington, A. M. Electron temperature and electron number density measurements in laser ablation Z-pinch experiments of Al 2 O 3. United States: N. p., 2019. Web. doi:10.1063/1.5081152.
Dutra, E. C., Koch, J. A., Presura, R., Wiewior, P., & Covington, A. M. Electron temperature and electron number density measurements in laser ablation Z-pinch experiments of Al 2 O 3. United States. doi:10.1063/1.5081152.
Dutra, E. C., Koch, J. A., Presura, R., Wiewior, P., and Covington, A. M. Thu . "Electron temperature and electron number density measurements in laser ablation Z-pinch experiments of Al 2 O 3". United States. doi:10.1063/1.5081152.
@article{osti_1561125,
title = {Electron temperature and electron number density measurements in laser ablation Z-pinch experiments of Al 2 O 3},
author = {Dutra, E. C. and Koch, J. A. and Presura, R. and Wiewior, P. and Covington, A. M.},
abstractNote = {Aluminum oxide (Al2O3) plasma was generated using the Ti:Sapphire/Nd:glass laser and Z-pinch pulse-power generator at the University of Nevada, Reno, Nevada Terawatt Facility. To determine the electron temperature, we use the Boltzmann plot method for the transitions (Al III 4d 2D3/2 → 4p 2P1/2) at 451.2564 nm, (Al III 4d 2D5/2 → 4p 2P3/2) at 452.9194 nm, (Al III 4p 2P3/2 → 4s 2S1/2) at 569.6603, and (Al III 4p 2P1/2 → 4s 2S1/2) at 572.2728 nm. Simultaneously, Mach–Zehnder laser interferometry was used to measure the electron number density. We compared simulated spectra obtained from PrismSPECT with electron number density and temperature measurements, and the electron temperature was found to range from 1.8 to 2.8 eV, while the electron number density was found to range from 2.3 × 1017 to 6.9 × 1017 cm−3 early in the pinched plasma formation.},
doi = {10.1063/1.5081152},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 8,
volume = 26,
place = {United States},
year = {2019},
month = {8}
}