Results 21 to 30 of about 169,728 (265)

Inactivation of Escherichia coli by atmospheric pressure plasma jet in water

Journal of Water and Health, 2022
The main aim of this work is inactivation of Escherichia coli in water using a laboratory-scale radio-frequency atmospheric pressure Argon plasma jet. This bacterium is widely present in the environment, especially in drinking water, and its pathogenic ...
Mehdi Bakhshzadmahmoudi, Nader Morshedian, Ahmad Mehramiz, Manijeh Kharaghani   +3 more
doaj   +1 more source

Spectroscopy of laboratory plasmas [PDF]

Space Science Reviews, 1972
AbstractWork under the heading of Laboratory Plasma Spectroscopy may be conveniently separated into three classes depending on the extent to which the interaction of the emitting atoms with their plasma environment is central to the investigation. Zero order, the longest established use of laboratory plasmas in connection with astrophysics, concerns ...
openaire   +1 more source

Plasma Plume Oscillations Monitoring during Laser Welding of Stainless Steel by Discrete Wavelet Transform Application

Sensors, 2010
The plasma optical radiation emitted during CO2 laser welding of stainless steel samples has been detected with a Si-PIN photodiode and analyzed under different process conditions.
Teresa Sibillano, Antonio Ancona, Domenico Rizzi, Valentina Lupo, Luigi Tricarico, Pietro Mario Lugarà   +5 more
doaj   +1 more source

Review of Rydberg Spectral Line Formation in Plasmas

Atoms, 2023
The present review is dedicated to the problem of an array of transitions between highly-excited atomic levels. Hydrogen atoms and hydrogen-like ions in plasmas are considered here. The presented methods focus on calculation of spectral line shapes. Fast
Andrey Yu. Letunov, Valery S. Lisitsa
doaj   +1 more source

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

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

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