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Dive into the research topics where Ábel Kálosi is active.

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Featured researches published by Ábel Kálosi.


Journal of Chemical Physics | 2015

Flowing-afterglow study of electron-ion recombination of para–H3+ and ortho–H3+ ions at temperatures from 60 K to 300 K

Michal Hejduk; Petr Dohnal; Peter Rubovič; Ábel Kálosi; Radek Plašil; Rainer Johnsen; J. Glosík

Detailed measurements employing a combination of a cryogenic flowing afterglow with Langmuir probe (Cryo-FALP II) and a stationary afterglow with near-infrared absorption spectroscopy (SA-CRDS) show that binary electron recombination of para-H3(+) and ortho-H3(+) ions occurs with significantly different rate coefficients, (p)αbin and (o)αbin, especially at very low temperatures. The measurements cover temperatures from 60 K to 300 K. At the lowest temperature of 60 K, recombination of para-H3(+) is at least three times faster than that of ortho-H3(+) ((p)αbin=(1.8±0.4)×10(-7) cm(3) s(-1) vs. (o)αbin=(0-0 (+5))×10(-8) cm(3) s(-1)).


Review of Scientific Instruments | 2018

Stationary afterglow apparatus with CRDS for study of processes in plasmas from 300 K down to 30 K

R. Plašil; Petr Dohnal; Ábel Kálosi; Štěpán Roučka; Dmytro Shapko; Serhiy Rednyk; Rainer Johnsen; J. Glosík

A cryogenic stationary afterglow apparatus equipped with a near-infrared cavity-ring-down-spectrometer (Cryo-SA-CRDS) for studies of electron-ion recombination processes in the plasma at temperatures 30-300 K has been designed, constructed, tested, and put into operation. The plasma is generated in a sapphire discharge tube that is contained in a microwave cavity. The cavity and the tube are attached to the second stage of the cold head of the cryocooler system, and they are inserted to an UHV chamber with mirrors for CRDS and vacuum windows on both ends of the tube. The temperature of the discharge tube can be made as low as 25 K. In initial test measurements, the discharge was ignited in He/Ar/H2 or He/H2 gas mixtures and the density of H3+ ions and their kinetic and rotational temperatures were measured during the discharge and afterglow. From the measured decrease in the ion density, during the afterglow, effective recombination rate coefficients were determined. Plasma relaxation was studied in He/Ar gas mixtures by monitoring the presence of highly excited argon atoms. The spectroscopic measurements demonstrated that the kinetic temperature of the ions is equal to the gas temperature and that it can be varied from 300 K down to 30 K.


Journal of Physics: Conference Series | 2015

Recombination of H2D+ and HD2+ ions with electrons at 80 K

Petr Dohnal; Ábel Kálosi; Artem Kovalenko; Radek Plašil; J. Glosík

Stationary afterglow with Cavity Ring Down Spectrometer was utilized to probe the number densities of H3+, H2D+, HD2+ and D3+ ions in discharge and afterglow plasma. The recombination rate coefficients for recombination of H2D+ and HD2+ ions with electrons were obtained from the time decays of overall ion number density at different fractions of [H2]/[D2].


Plasma Sources Science and Technology | 2015

Recombination of H+3 ions with electrons in He/H2 ambient gas at temperatures from 240 K to 340 K

J. Glosík; Petr Dohnal; Peter Rubovič; Ábel Kálosi; Radek Plašil; Štěpán Roučka; Rainer Johnsen


Physical Review A | 2014

H2-assisted ternary recombination ofH3+with electrons at 300 K

Petr Dohnal; Peter Rubovič; Ábel Kálosi; Michal Hejduk; Radek Plašil; Rainer Johnsen; J. Glosík


European Physical Journal-applied Physics | 2016

Monitoring the removal of excited particles in He/Ar/H2 low temperature afterglow plasma at 80–300 K

Ábel Kálosi; Petr Dohnal; Lucie Augustovičová; Štĕpán Roučka; Radek Plašil; J. Glosík


Plasma Sources Science and Technology | 2017

Stationary afterglow measurements of the temperature dependence of the electron–ion recombination rate coefficients of and in He/Ar/H2/D2 gas mixtures at T = 80–145 K

Radek Plašil; Petr Dohnal; Ábel Kálosi; Štěpán Roučka; Rainer Johnsen; J. Glosík


European Physical Journal-applied Physics | 2017

Electron-ion recombination in low temperature hydrogen/deuterium plasma

J. Glosík; Petr Dohnal; Ábel Kálosi; L. Augustovičová; Dmytro Shapko; Štěpán Roučka; Radek Plašil


Physical Chemistry Chemical Physics | 2016

Binary and ternary recombination of H2D+ and HD2+ ions with electrons at 80 K

Petr Dohnal; Ábel Kálosi; Radek Plašil; Štěpán Roučka; Artem Kovalenko; Serhiy Rednyk; Rainer Johnsen; J. Glosík


EPJ Web of Conferences | 2015

State selective study of H3+ recombination in Cryo-FALP and SA-CRDS experiments at 77 K

J. Glosík; Michal Hejduk; Petr Dohnal; Peter Rubovič; Ábel Kálosi; Radek Plašil

Collaboration


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J. Glosík

Charles University in Prague

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Petr Dohnal

Charles University in Prague

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Radek Plašil

Charles University in Prague

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Rainer Johnsen

University of Pittsburgh

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Peter Rubovič

Charles University in Prague

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Štěpán Roučka

Charles University in Prague

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Michal Hejduk

Charles University in Prague

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Dmytro Shapko

Charles University in Prague

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Artem Kovalenko

Charles University in Prague

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Serhiy Rednyk

Charles University in Prague

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