Results 31 to 40 of about 507,959 (292)

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

A Simple Laser-Induced Breakdown Spectroscopy Method for Quantification and Classification of Edible Sea Salts Assisted by Surface-Hydrophilicity-Enhanced Silicon Wafer Substrates

Sensors, 2023
Salt, one of the most commonly consumed food additives worldwide, is produced in many countries. The chemical composition of edible salts is essential information for quality assessment and origin distinction.
Han-Bum Choi, Seung-Hyun Moon, Hyang Kim, Nagaraju Guthikonda, Kyung-Sik Ham, Song-Hee Han, Sang-Ho Nam, Yong-Hoon Lee   +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

Breakdown Spectroscopy Induced by Nonlinear Interactions of Femtosecond Laser Filaments and Multidimensional Plasma Gratings

Ultrafast Science, 2023
Breakdown spectroscopy is a valuable tool for determining elements in solids, liquids, and gases. All materials in the breakdown region can be ionized and dissociated into highly excited fragments and emit characteristic fluorescence spectra.
Mengyun Hu, Shupeng Xu, Shuai Yuan, Heping Zeng   +3 more
doaj   +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

Spectroscopic investigations of detachment on the MAST Upgrade Super-X divertor

Nuclear Fusion, 2022
We present the first analysis of the atomic and molecular processes at play during detachment in the MAST-U Super-X divertor using divertor spectroscopy data.
K. Verhaegh, B. Lipschultz, J.R. Harrison, N. Osborne, A.C. Williams, P. Ryan, J. Allcock, J.G. Clark, F. Federici, B. Kool, T. Wijkamp, A. Fil, D. Moulton, O. Myatra, A. Thornton, T.O.S.J. Bosman, C. Bowman, G. Cunningham, B.P. Duval, S. Henderson, R. Scannell, the MAST Upgrade team   +21 more
doaj   +1 more source

Using the Pairs of Lines Broadened by Collisions with Neutral and Charged Particles for Gas Temperature Determination of Argon Non-Thermal Plasmas at Atmospheric Pressure

Atoms, 2017
The spectroscopic method for gas temperature determination in argon non-thermal plasmas sustained at atmospheric pressure proposed recently by Spectrochimica Acta Part B 129 14 (2017)—based on collisional broadening measurements of selected pairs of ...
Cristina Yubero, Antonio Rodero, Milan S. Dimitrijevic, Antonio Gamero, Maria del Carmen García   +4 more
doaj   +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

Multichannel visible spectroscopy diagnostic for particle transport studies in the H-1 heliac [PDF]

, 2015
A multichannel spectroscopy diagnostic has been developed to study cross-field particle transport in the radiation-dominated low-temperature plasmas ...
Punzmann, H., Shats, M. G., Solomon, W. M., Xia, H.   +3 more
core   +1 more source

Laboratory Hydrogen-Beta Emission Spectroscopy for Analysis of Astrophysical White Dwarf Spectra

Atoms, 2018
This work communicates a review on Balmer series hydrogen beta line measurements and applications for analysis of white dwarf stars. Laser-induced plasma investigations explore electron density and temperature ranges comparable to white dwarf star ...
Christian G. Parigger, Kyle A. Drake, Christopher M. Helstern, Ghaneshwar Gautam   +3 more
doaj   +1 more source