Results 31 to 40 of about 2,744,172 (310)

On-Chip Microplasmas for the Detection of Radioactive Cesium Contamination in Seawater

Micromachines, 2017
On-chip microplasmas have previously been used in designing a compact and portable device for identifying pollutants in a water sample. By exciting a liquid sample with a high energy microdischarge and recording the spectral wavelengths emitted, the ...
Joshua B. Joffrion, Darrian Mills, William Clower, Chester G. Wilson   +3 more
doaj   +1 more source

Gallstone Magnesium Distributions from Optical Emission Spectroscopy

Atoms, 2018
This work reports measurements of calcified gallstone elemental compositions using laser-induced optical emission spectroscopy. The experimental results support the importance of the magnesium concentration in gallstone growth.
Ashok K. Pathak, Nilesh K. Rai, Rohit Kumar, Pradeep K. Rai, Awadhesh K. Rai, Christian G. Parigger   +5 more
doaj   +1 more source

Closed Loop Control of Penetration Depth during CO₂ Laser Lap Welding Processes

Sensors, 2012
In this paper we describe a novel spectroscopic closed loop control system capable of stabilizing the penetration depth during laser welding processes by controlling the laser power.
Antonio Ancona, Bert Huis in ’t Veld, Ronald Aarts, Ali Riza Konuk, Pietro Mario Lugarà, Francesco P. Mezzapesa, Teresa Sibillano, Domenico Rizzi   +7 more
doaj   +1 more source

Spectral Modeling of Hydrogen Radiation Emission in Magnetic Fusion Plasmas

Atoms, 2019
Modeling of the spectral line and continuum radiation emitted by hydrogen isotopes in peripheral regions of magnetic fusion is presented through profiles of the Zeeman-Doppler broadened Hα/Dα line and those of the Stark broadened high-n Balmer ...
Mohammed Koubiti, Roshin Raj Sheeba
doaj   +1 more source

Spectral and temporal behavior of an alkali metal plasma extreme ultraviolet source for surface morphology applications [PDF]

, 2011
We have characterized the emission spectrum and temporal history of a pure potassium plasma in a capillary discharge. Strong broadband emission was observed around 40 nm due to 3s−3p, 3p−3d, and 3d−4f transitions in ions ranging from K2+ to K4+ at a time-
Noboru Yugami, Takamitsu Otsuka, Yugami, Noboru, Terauchi, Hiromitsu, Yamaguchi, Mami, O'Sullivan, Gerry, D\u27Arcy, Rebekah, Higashiguchi, Takeshi, Yatagai, Toyohiko, Mami Yamaguchi, Dunne, Padraig, O\u27Sullivan, Gerry, D'Arcy, Rebekah, Toyohiko Yatagai, Hiromitsu Terauchi, Rebekah D’Arcy, Padraig Dunne, Takeshi Higashiguchi, Gerry O’Sullivan, Otsuka, Takamitsu   +19 more
core   +1 more source

Line-Shape Code Comparison through Modeling and Fitting of Experimental Spectra of the C ii 723-nm Line Emitted by the Ablation Cloud of a Carbon Pellet

Atoms, 2014
Various codes of line-shape modeling are compared to each other through the profile of the C ii 723-nm line for typical plasma conditions encountered in the ablation clouds of carbon pellets, injected in magnetic fusion devices.
Mohammed Koubiti, Motoshi Goto, Sandrine Ferri, Stephanie B. Hansen, Evgeny Stambulchik   +4 more
doaj   +1 more source

Dual-pulse laser induced breakdown spectroscopy in the vacuum ultraviolet with ambient gas: spectroscopic analysis and optimization of limit of detection of carbon and sulfur in steel [PDF]

, 2012
Laser Induced Breakdown Spectroscopy (LIBS) in the vacuum ultraviolet (VUV) spectral region was applied to standard steel samples in dual-pulse excitation mode with an ambient gas. Two lasers were employed in collinear geometry, one as an ablation laser (
Jiang, Xi
core   +2 more sources

VUV/EUV ionising radiation and atoms and ions: dual laser plasma investigations [PDF]

, 2004
The interaction of ionising radiation with atoms and ions is a key fundamental process. This report concentrates on studies of photoexcitation/photoionisation using laser-produced plasmas as continuum sources and synchronised laser plasma plumes to ...
Costello, John T., van Kampen, Paul, Mosnier, Jean-Paul, Kennedy, Eugene T.   +3 more
core   +1 more source

Structural rearrangements of membrane proteins probed by water-edited solid-state NMR spectroscopy [PDF]

, 2009
We show that water-edited solid-state NMR spectroscopy allows for probing global protein conformation and residue-specific solvent accessibility in a lipid bilayer environment.
Ader, C., NMR Spectroscopy, Baldus, M., Seidel, K., Schneider, R., Etzkorn, M., Becker, S., Sub NMR Spectroscopy, Dep Scheikunde   +8 more
core   +1 more source

Studying of Plasma- Polymerized Pyrrole at Variable Gas Flow Rates Via Plasma Jet

Iraqi Journal of Physics, 2021
     In this manuscript has investigated the synthesis of plasma-polymerized pyrrole (C4H5N) nano-particles prepared by the proposed atmospheric pressure nonequilibrium plasma jet through the parametric studies, particularly gas flow rate (0.5, 1 and 1 ...
Saba Jawad Kadhem
doaj   +1 more source