scholarly journals Effects of easily ionisable elements on copper and zinc lines excited in a plasma pencil

2016 ◽  
Vol 31 (10) ◽  
pp. 2031-2036 ◽  
Author(s):  
Magda Dvořáková ◽  
Aleš Hrdlička ◽  
Pavel Slavíček ◽  
Viktor Kanický ◽  
Vítězslav Otruba
Keyword(s):  
Spectral Lines ◽  
Capacitively Coupled ◽  
Copper And Zinc ◽  
Plasma Pencil

The influence of Easily Ionizable Elements (EIE) (chlorides of Na, K, Mg, Ca, Sr and Ba) on the measured spectral lines intensities of copper and zinc excited in a capacitively coupled tubular discharge, known as a plasma pencil, is described.

Effects of acid, sodium and its salt counterions on the atomic emission of copper and zinc in plasma pencil

2019 ◽  
Vol 34 (12) ◽  
pp. 2451-2458
Author(s):  
Magda Dvořáková ◽  
Aleš Hrdlička ◽  
Pavel Slavíček ◽  
Viktor Kanický
Keyword(s):  
Nitric Acid ◽  
Atomic Emission ◽  
Atomic Line ◽  
Copper And Zinc ◽  
Copper Zinc ◽  
Plasma Pencil

Copper, zinc and sodium atomic line emissions in the pencil plasma under the influence of easily ionizable elements (EIE), counterions and nitric acid were studied.

scholarly journals Simultaneous Determination of As, Bi, Sb, Se, Te, Hg, Pb and Sn by Small-Sized Electrothermal Vaporization Capacitively Coupled Plasma Microtorch Optical Emission Spectrometry Using Direct Liquid Microsampling

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2642
Author(s):  
Simion Bogdan Angyus ◽  
Erika Levei ◽  
Dorin Petreus ◽  
Radu Etz ◽  
Eniko Covaci ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Spectral Lines ◽  
Emission Spectrometry ◽  
General Interest ◽  
Electrothermal Vaporization ◽  
Capacitively Coupled ◽  
Capacitively Coupled Plasma

The simultaneous determination of chemical vapor-generating elements involving derivatization is difficult even by inductively coupled plasma optical emission spectrometry or mass spectrometry. This study proposes a new direct liquid microsampling method for the simultaneous determination of As, Bi, Se, Te, Hg, Pb, and Sn, using a fully miniaturized set-up based on electrothermal vaporization capacitively coupled plasma microtorch optical emission spectrometry. The method is cost-effective, free from non-spectral interference, and easy to run by avoiding derivatization. The method involves the vaporization of analytes from the 10 µL sample and recording of episodic spectra generated in low-power (15 W) and low-Ar consumption (150 mL min−1) plasma microtorch interfaced with low-resolution microspectrometers. Selective vaporization at 1300 °C ensured the avoidance of non-spectral effects and allowed the use of external calibration. Several spectral lines for each element even in the range 180–210 nm could be selected. Generally, this spectral range is examined with large-scale instrumentation. Even in the absence of derivatization, the obtained detection limits were low (0.02–0.75 mg kg−1) and allowed analysis of environmental samples, such as cave and river sediments. The recovery was in the range of 86–116%, and the accuracy was better than 10%. The method is of general interest and could be implemented on any miniaturized or classical laboratory spectrometric instrumentation.

Possibilities and analytical properties of the radiofrequency plasma pencil operating in the continuous and in the pulsed mode

2015 ◽  
Vol 30 (2) ◽  
pp. 459-467 ◽  
Author(s):  
Lukáš Novosád ◽  
Aleš Hrdlička ◽  
Pavel Slavíček ◽  
Vítězslav Otruba ◽  
Viktor Kanický
Keyword(s):  
Plasma Jet ◽  
Continuous Mode ◽  
Carrier Wave ◽  
Capacitively Coupled ◽  
Pulsed Mode ◽  
Analytical Properties ◽  
Capacitively Coupled Plasma ◽  
Plasma Pencil

A two-electrode capacitively coupled plasma jet discharge operating at a 13.56 MHz symmetrical sinusoidal frequency carrier wave in a continuous mode and in a pulsed mode is described in this paper.

The Interpretation of Line Profiles

1977 ◽  
Vol 36 ◽  
pp. 191-215
Author(s):  
G.B. Rybicki
Keyword(s):  
Magnetic Fields ◽  
Atomic Physics ◽  
Velocity Fields ◽  
Spectral Lines ◽  
Inhomogeneous Structure ◽  
The Sun ◽  
Line Profiles ◽  
Physical Phenomena

Observations of the shapes and intensities of spectral lines provide a bounty of information about the outer layers of the sun. In order to utilize this information, however, one is faced with a seemingly monumental task. The sun’s chromosphere and corona are extremely complex, and the underlying physical phenomena are far from being understood. Velocity fields, magnetic fields, Inhomogeneous structure, hydromagnetic phenomena – these are some of the complications that must be faced. Other uncertainties involve the atomic physics upon which all of the deductions depend.

Ca++-ATPase activity in the hepatopancreas cells of Oniscus asellus

1992 ◽  
Vol 50 (1) ◽  
pp. 820-821
Author(s):  
G.M. Vernon ◽  
A. Surace ◽  
R. Witkus
Keyword(s):  
B Cells ◽  
Epithelial Cell ◽  
Atpase Activity ◽  
Calcium Transport ◽  
Carcinus Maenas ◽  
Cell Types ◽  
Molt Cycle ◽  
Copper And Zinc

The hepatopancreas consists of a pair of bilobed tubules comprised of two epithelial cell types. S cells are absorptive and accumulate metals such as copper and zinc. Ca++ concentrations vary between the S and B cells and during the molt cycle. Roer and Dillaman implicated Ca++-ATPase in calcium transport during molting in Carcinus maenas. This study was undertaken to compare the localization of Ca++-ATPase activity in the S and B cells during intermolt.

Current Status of Solid-State X-Ray Systems

1985 ◽  
Vol 43 ◽  
pp. 158-161
Author(s):  
Martin Peckerar ◽  
Anastasios Tousimis
Keyword(s):  
Solid State ◽  
Electric Fields ◽  
Spectral Lines ◽  
Current Status ◽  
Mobile Charge ◽  
Electron Hole ◽  
X Ray ◽  
Sensing Systems ◽  
Transmission Electron ◽  
Electron Microscopes

Solid state x-ray sensing systems have been used for many years in conjunction with scanning and transmission electron microscopes. Such systems conveniently provide users with elemental area maps and quantitative chemical analyses of samples. Improvements on these tools are currently sought in the following areas: sensitivity at longer and shorter x-ray wavelengths and minimization of noise-broadening of spectral lines. In this paper, we review basic limitations and recent advances in each of these areas. Throughout the review, we emphasize the systems nature of the problem. That is. limitations exist not only in the sensor elements but also in the preamplifier/amplifier chain and in the interfaces between these components.Solid state x-ray sensors usually function by way of incident photons creating electron-hole pairs in semiconductor material. This radiation-produced mobile charge is swept into external circuitry by electric fields in the semiconductor bulk.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

SPECTRAL LINES EMISSION FROM CARBON-HYDROGEN PLASMAS GENERATED BY TEM10LASER PULSES

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-741-C7-742
Author(s):  
S. Chyrczakowski ◽  
K. Melzacki ◽  
M. Sadowski
Keyword(s):  
Spectral Lines ◽  
Hydrogen Plasmas

Excitation of spectral lines of cadmium in area of 120-360 nm in electron-atomic collisions

1997 ◽  
Vol 1 (0) ◽  
pp. 25-28
Author(s):  
Х. И. Алджубури ◽  
М.-Т. И. Соскида ◽  
Л. Л. Шимон
Keyword(s):  
Spectral Lines ◽  
Atomic Collisions
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