scholarly journals Excitation of higher levels of singly charged copper ions in argon and neon glow discharges

2014 ◽  
Vol 29 (12) ◽  
pp. 2256-2261 ◽  
Author(s):  
Zdeněk Weiss ◽  
Edward B. M. Steers ◽  
Juliet C. Pickering ◽  
Volker Hoffmann ◽  
Sohail Mushtaq
Keyword(s):  
Transition Rate ◽  
Copper Ions ◽  
Emission Spectra ◽  
Glow Discharges ◽  
Using Data ◽  
Singly Charged

Transition rate diagrams of copper ions in argon and neon glow discharges are presented, using data from Cu ii emission spectra.

scholarly journals Characteristics of an Overstressed Discharge of Nanosecond Duration between Electrodes of Chalcopyrite in High Pressure Nitrogen

2020 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Thin Films ◽  
Quartz Substrate ◽  
Emission Spectra ◽  
Spectral Lines ◽  
Nanosecond Discharge ◽  
Nanosecond Duration ◽  
Main Decomposition ◽  
Singly Charged ◽  
Quartz Substrates ◽  
Discharge Method

The electrical and optical characteristics of the overstressed nanosecond discharge in nitrogen at a pressure of 202 kPa, which was ignited between electrodes from chalcopyrite (CuInSe2 ), are presented. Upon sputtering of chalcopyrite electrodes, CuInSe2 compound vapors have been introduced into the discharge plasma. Chalcopyrite molecules were partially destroyed in the plasma and partially deposited in the form of thin films on a quartz substrate, which was placed near the system of discharge electrodes. The main decomposition products of a chalcopyrite molecule in an overstressed nanosecond discharge were found, which were in excited and ionized states and which, in the plasma emission spectra, were mainly represented by atoms and singly charged copper and indium ions. The spectral lines of copper and indium are proposed, which can be used to control the deposition of thin films of chalcopyrite in real time. On quartz substrates, gas-discharge method was used to synthesize thin films based on the CuInSe2 compound, which effectively absorbed light in a wide spectral range (200-800 nm), which opens up prospects for their use in photovoltaic devices.

scholarly journals Investigation of the conditions of synthesis of metal and chalcopyrite films from the degradation products of electrodes of an overstressed nanosecond discharge in argon and air

2020 ◽  
Vol 21 (4) ◽  
pp. 669-679
Author(s):  
A.K. Shuaibov ◽  
A.I. Minya ◽  
R.V. Grytsak ◽  
A.A. Malinina ◽  
I.V. Shevera ◽  
...  
Keyword(s):  
Degradation Products ◽  
Strong Electric Field ◽  
Emission Spectra ◽  
Aluminum Electrode ◽  
High Time Resolution ◽  
Copper Electrodes ◽  
Decay Products ◽  
Copper Aluminum ◽  
Singly Charged ◽  
Discharge Gap

The characteristics of an overstressed bipolar discharge with a duration of 100-150 ns in argon and air, which was ignited between copper electrodes in argon, and also between an aluminum electrode and a chalcopyrite (CuInSe2) electrode in air, are presented. In the process of microexplosions of inhomogeneities on the working surfaces of the electrodes in a strong electric field, the vapor of copper, aluminum, and vapor of ternary chalcopyrite are introduced into the interelectrode gap. This creates the prerequisites for the synthesis of thin copper films and the synthesis of films based on quaternary chalcopyrite - CuAlInSe2, which can be deposited on a quartz plate installed near the center of the discharge gap. The optical characteristics of the plasma, as well as voltage pulses across the discharge gap of d = 1–2 mm, current pulses, and pulsed energy contributions to the discharge, have been investigated using emission spectroscopy with a high time resolution. The plasma emission spectra were thoroughly studied, which made it possible to establish the main decay products of the chalcopyrite molecule and the energy states of atoms and singly charged ions of aluminum, copper, and indium, which are formed in the discharge.

scholarly journals Rhodamine B derivative-modified up-conversion nanoparticle probes based on fluorescence resonance energy transfer (FRET) for the solid-based detection of copper ions

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30917-30924 ◽  
Author(s):  
Xiaoyan Liu ◽  
Nan Ding ◽  
Jun Wang ◽  
Honglan Chen ◽  
Xinwei Chen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Rhodamine B ◽  
Color Change ◽  
Copper Ions ◽  
Direct Detection ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Nanoparticle Probes

A novel solid-based up-conversion FRET sensor is convenient for the direct detection of Cu2+ based on color change and emission spectra.

Mixed LTCC and LTTT Technology for Microplasma Generator Fabrication

2009 ◽  
Vol 6 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Roberto K. Yamamoto ◽  
Mário R. Gongora-Rubio ◽  
Rodrigo S. Pessoa ◽  
Márcio R. Cunha ◽  
Homero S. Maciel
Keyword(s):  
Low Temperature ◽  
Sulfur Hexafluoride ◽  
Emission Spectra ◽  
Optical Emission ◽  
Fabrication Method ◽  
Device Structure ◽  
Glow Discharges ◽  
Silver Palladium ◽  
Optical Emission Spectra ◽  
Process Transfer

An issue of paramount importance for the fabrication of microplasma devices is internal structure flatness. To overcome this problem we devised a fabrication method using LTCC (Low Temperature Cofired Ceramic) and LTTT (Low Temperature Transfer Tape) technologies. The flexibility resulting from mixing these technologies could enable fabrication of certain microfluidic applications. In the present work, the fabrication of a microplasma generator using a mixed LTCC and LTTT technology is presented. Silver-palladium electrodes were screen printed on the green tapes and were cofired after machining of microchannels and other structures. Two electrode plates were obtained separately in this way using a setter powder sheet to ensure flatness. In the postfire process, transfer tapes were used to bind the two electrode plates and the electrode spacer together to make the final device structure. Uniform and stable glow discharges were obtained in argon, nitrogen, oxygen, and sulfur hexafluoride gases. Paschen's curves, V-I characteristics, and optical emission spectra were obtained in DC discharges. The fabrication method presented has been demonstrated to be very reproducible and produced very flat electrodes.

scholarly journals Low temperature photoionized Ne plasmas induced by laser-plasma EUV sources

2015 ◽  
Vol 33 (2) ◽  
pp. 193-200 ◽  
Author(s):  
A. Bartnik ◽  
H. Fiedorowicz ◽  
T. Fok ◽  
R. Jarocki ◽  
M. Szczurek ◽  
...  
Keyword(s):  
Spectral Range ◽  
Extreme Ultraviolet ◽  
Emission Spectra ◽  
Spectral Lines ◽  
Wide Spectral Range ◽  
Spectral Maximum ◽  
Radiation Beam ◽  
Photoionized Plasmas ◽  
Singly Charged ◽  
Charged Ions

AbstractIn this work, two laser-produced plasma (LPP) sources – extreme ultraviolet (EUV) and a LPP soft X-ray (SXR) source were used to create Ne photoionized plasmas. A radiation beam was focused onto a gas stream, injected into a vacuum chamber synchronously with the radiation pulse. EUV radiation spanned a wide spectral range with pronounced maximum centered at λ≈11 nm, while in case of the SXR source spectral maximum was at λ≈1.4 nm. Emission spectra of photoionized plasmas created this way were measured in a wide spectral range λ = 10–100 nm. The dominating spectral lines originated from singly charged ions (Ne II) and neutral atoms (Ne I). For the highest radiation fluence, spectral lines originating from Ne III and even Ne IV species were detected. Differences between the experimental spectra, obtained for all irradiation conditions, were analyzed. They were attributed either to different fluence or spectral distribution of driving photons.

The effect of hydrogen and nitrogen on emission spectra of iron and titanium atomic lines in analytical glow discharges

2008 ◽  
Vol 23 (9) ◽  
pp. 1223 ◽  
Author(s):  
Petr Šmíd ◽  
Edward Steers ◽  
Zdeněk Weiss ◽  
Juliet Pickering ◽  
Volker Hoffmann
Keyword(s):  
Emission Spectra ◽  
Glow Discharges ◽  
Atomic Lines

Excitation and transition rate diagrams of singly ionized iron in analytical glow discharges in argon, neon and an argon–hydrogen mixture

2014 ◽  
Vol 29 (11) ◽  
pp. 2078-2090 ◽  
Author(s):  
Zdeněk Weiss ◽  
Edward B. M. Steers ◽  
Juliet C. Pickering ◽  
Sohail Mushtaq
Keyword(s):  
Transition Rate ◽  
Iron Ions ◽  
Hydrogen Mixture ◽  
Glow Discharges ◽  
Ionization Processes

Excitation and ionization processes of iron ions in argon-, neon- and argon–hydrogen glow discharges are described based on transition rate diagrams.

Polar Magnetic Field Reversals of the Sun in Maunder Minimum

2000 ◽  
Vol 179 ◽  
pp. 193-196
Author(s):  
V. I. Makarov ◽  
A. G. Tlatov
Keyword(s):  
Magnetic Field ◽  
Maunder Minimum ◽  
The Sun ◽  
Annual Rings ◽  
Field Reversal ◽  
Polar Magnetic Field ◽  
Pine Trees ◽  
Using Data ◽  
Magnetic Field Reversal

AbstractA possible scenario of polar magnetic field reversal of the Sun during the Maunder Minimum (1645–1715) is discussed using data of magnetic field reversals of the Sun for 1880–1991 and the14Ccontent variations in the bi-annual rings of the pine-trees in 1600–1730 yrs.

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