Helium Plasma
H- line in a corona helium plasma: a multi-code line
... Theoretical Stark profiles of the H-β line calculated for hydrogen atoms in a helium plasma 137.. with an electron density of 10 16 cm -3 and a temperature of 0.1 eV for both plasma H[r] ...
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Formation Condition of Fiberform Nanostructured Tungsten by Helium Plasma Exposure
... for helium bubbles ...while helium plasma was irradiated. The incident helium ion energy was 50 eV and the surface tem- peratures for UFG, ITER-RTG, and PM-W were 1700 K, 1880 K, and 1750 K, ...
5
Screening freshness of seafood by measuring trimethylamine (TMA) levels using helium-plasma ionization mass spectrometry (HePI-MS)
... A stream (25–30 mL/min) of high-purity helium (99.999%, Airgas, Radnor, PA, USA) was passed through a metal capillary (100 μm ID) held at a high voltage (typ- ically, 3 kV) for it to function as a ...
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Dynamic Simulation of Multiplier Effects of Helium Plasma and Neutron Irradiation on Microstructural Evolution in Tungsten
... between helium and defects were also ...of helium in tungsten. The helium concentration was saturated in tungsten ...of helium- vacancy clusters was nearly uniform in the matrix except at the ...
6
Collisional-Radiative Model for Spectroscopic Diagnostic of Optically Thick Helium Plasma
... We have previously developed an iterative computa- tional code for solving the radiative transfer equation cou- pled with the collisional-radiative rate equation [5]. In this study, we propose a simple method that can ...
7
Spatially Resolved Absorption Spectroscopy on a Microhollow Cathode Helium Plasma Using a Vertical-Cavity Surface-Emitting Laser
... the plasma with a 30 µm diameter in the Rayleigh criterion using a lens with a fo- cal length of 150 ...the plasma by automati- cally tilting the focusing lens and measured the absorption spectrum with ...
5
Tungsten 'fuzz' growth re-examined: the dependence on ion fluence in non-erosive and erosive helium plasma
... the exposure time, this can be equated to a deposition layer and subtracted from the overall thickness, as shown in brackets in table A1. Since SEM observation of the fuzz morphology is similar to fuzz in other non UoL ...
20
Plasma Diagnostics of Low Pressure Helium Glow Discharges at Different Working Voltages
... low-pressure helium plasma characterization and ...pressure plasma of helium gas was generated between a flat planar anode and cathode ...analyze plasma parameters of a structure ...
7
Investigation of atmospheric microplasma jet for nanofabrication
... linear plasma head even at smallest gap resolution used for ...of helium and argon occurs in different ways and this can explain the ...excite helium are fairly ...In helium plasma, ...
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Microplasma MEMS device: its design, fabrication and application in hydrogen generation for fuel cells
... that Plasma can be generated at low DC voltage and at atmospheric ...and Helium gases generated plasma. Plasma with Argon was at slightly higher voltages than at ...than Helium, though ...
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Divertor Plasma Simulation Experiment Using Hydrogen Ionizing Plasma and Helium Ion Beam in an RF Plasma Source DT-ALPHA
... the helium ion beam and the helium ...For helium ions of E = 10 keV, the cross section of the CX interaction with helium atoms is σ ∼ 10 − 19 m 2 ...
5
Broadening of the Neutral Helium 492 nm Line in a
... Keywords: Stark broadening; van der Waals broadening; line shapes; helium plasma; corona 26.. discharge; plasma diagnostics; code comparison; neutral broadening; pressure bro[r] ...
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Impact of plasma jet geometry on residence times of radical species
... argon plasma jet, Shao et al 19 found that adding an electrostatic force facilitated a forward momentum in the flow, which was in agreement with their experimental observations 19 ...influence plasma plume ...
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Morphology and Optical Property Changes of Nanostructured Tungsten in LHD
... Nanostructured tungsten formed by the exposure to helium plasma in a linear plasma device was installed in the large helical device (LHD). After the exposure in a series of experiments in the 2012 ...
9
Development of a Helicon Plasma Source for the Measurement of He* Component in a He0 Beam
... a helium neutral beam in a helium plasma was ...metastable helium atom has a more than one order larger reaction rate than that from a ground state ...the plasma will become a suitable ...
7
Voltage distribution over capacitively coupled plasma electrode for atmospheric pressure plasma generation
... parallel-plate plasma electrode was constructed by the TLM ...atmospheric-pressure helium plasma impedance was used for these ...by plasma ignition; however, the change was small for ...before ...
7
Study of EMIC wave excitation using direct ion measurements
... cold plasma dispersion relation (equation (19) instead of equation (14) in Chen et ...cold plasma dispersion relation is to avoid two-dimensional numerical integration involved with the real part of the ...
20
Applications of the Variational Quantum Monte Carlo Method to the Two-Electron Atoms
... An implementation of the Hartree–Fock (HF) method using a Laguerre-based wave function described by A. W. King, A. L. Baskerville, and H. Cox [11] to study the ground state of two-electron atoms in the fixed nucleus ...
12
Nanostructures on Surface of SrTio3 Single Crystals Treated by Plasma
... tion has been expanded. Experimental data presented for materials after plasma treatment show the wide opportu nity for modification of the surface of metals and semi- conductors [19-21]. As a wide-band gap ...
6
Sensitized fluorescence in potassium vapour.
... Sensitized fluorescence of potassium vapour was investiga ted to determine the cross-sections for collisions of a second kind occurring between potassium and potassium, potassium and helium, and potassium and ...
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