Results 241 to 250 of about 507,959 (292)
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Fusion Technology, 2000
Plasma spectroscopy is a diagnostic tool which is most suitable for the measurement of the behaviour of impurity ions, e.g. density, temperature and velocity distributions, also in high temperature plasmas. In most cases accurate knowledge of atomic properties, like emitted wavelengths, transition probabilities and collision cross sections is needed ...
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Plasma spectroscopy is a diagnostic tool which is most suitable for the measurement of the behaviour of impurity ions, e.g. density, temperature and velocity distributions, also in high temperature plasmas. In most cases accurate knowledge of atomic properties, like emitted wavelengths, transition probabilities and collision cross sections is needed ...
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Applications to Plasma Spectroscopy
2021Applications to plasma spectroscopy are presented for different types of plasmas that are currently of great interest for science and applications: low-density tokamak plasmas, dense optical laser-produced plasmas, high-current Z-pinch plasmas, and X-ray Free Electron Lasers interacting with solids. The general principles of plasma electron temperature
Frank B. Rosmej +2 more
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Polarization in plasma spectroscopy
AIP Conference Proceedings, 1995Starting with the early experiment of observing polarization of radiation from canal rays in an electric field, we review spatially anisotropic excitation processes which create aligned atoms or ions, leading to polarization of the emitted radiation by these atoms or ions. Collisional relaxation of the alignment is also reviewed.
Takashi Fujimoto, Tetsuya Kawachi
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Spectroscopy of magnetized plasmas
Journal of Quantitative Spectroscopy and Radiative Transfer, 2001Abstract The frequency fluctuation model that provides a model for the description of Stark broadening has been modified to include the effect of a uniform magnetic field. This model is a convenient framework for treating, in a non perturbative approach, simultaneously acting Zeeman and Stark effects, while retaining the effect of ion dynamics.
L. Godbert-Mouret +8 more
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Optical Spectroscopy of Surfaces Plasmas Treaments
2021Surface plasmas treaments have been studied in Ar - gas mixtures (H2, N2) as film depositions in fields like microelectronics with amorphous a-SiH, iron nitriding and hard coatings with TiN deposition. Several plasmas setups are considered: sputtering plasmas for a-SiH and TiN deposition and plasmas afterglows for iron nitriding. To control the process,
Ricard, André +4 more
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Plasma Spectroscopy in Pinch Plasmas
2011Magnetic fields play a very important role in the dynamics of plasmas. Through interactions with the ions and electrons within plasmas, their behaviour and evolution can be drastically influenced. It is the Zeeman effect that is responsible for the splitting of radiative lines observed.
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Principles of Plasma Spectroscopy
Nuclear Fusion, 1998This book gives a comprehensive treatment of plasma spectroscopy, the quantitative study of line and continuous radiation from high temperature plasmas. This highly interdisciplinary field combines elements of atomic, plasma and statistical physics, and has wide application to simulations and diagnostics of laboratory and astrophysical plasmas ...
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AIP Conference Proceedings, 2008
Plasma spectroscopy is a well established technique for impurities study in fusion plasmas. A brief description of the several spectroscopic systems which have been in operation at ISTTOK is given. In ISTTOK a passive spectroscopy diagnostic system is being used to perform spectral and spatial characterization in the 300–850 nm wavelength range.
J. Figueiredo +6 more
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Plasma spectroscopy is a well established technique for impurities study in fusion plasmas. A brief description of the several spectroscopic systems which have been in operation at ISTTOK is given. In ISTTOK a passive spectroscopy diagnostic system is being used to perform spectral and spatial characterization in the 300–850 nm wavelength range.
J. Figueiredo +6 more
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Upgraded Plasma Spectroscopy Internet Laboratory
2019 5th Experiment International Conference (exp.at'19), 2019This paper presents a remote-access plasma spectrometry laboratory, designed to provide the students of classical and technical universities with opportunities to practice hands-on skills in plasma diagnostics by spectroscopic methods. A newly developed interactive automatic system for atomic/ molecular spectra recognition and processing with an online
Alexander Zimin +2 more
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“All air–plasma” terahertz spectroscopy
Optics Letters, 2011We demonstrate terahertz wave generation and detection capabilities up to 6 THz without the need for solid state materials, biased electrodes, or forward propagating signal collection. An "all air-plasma" terahertz system is used to encode explosive material resonant signatures into the 357 nm nitrogen fluorescence line of a bichromatic field-induced ...
Benjamin, Clough +2 more
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