Spatio-temporal dynamics of a microsecond pulsed Grimm-type glow discharge
Literature Information
Ivan B. Krstić, Bratislav M. Obradović, Milorad M. Kuraica
Spatio-temporal dynamics of a Grimm-type microsecond pulsed glow discharge (μPGD), that operates in abnormal glow regime in argon at 6 mbar, is presented. The occurrence of a high current peak during the ignition of the discharge was analyzed and the importance of taking into account the displacement current was pointed out. A development of the electron excitation temperature of argon atoms and argon ions was measured at several distances from the cathode. Spatio-temporal evolution of the intensity of selected spectral lines of atoms and ions of argon and copper were measured and analyzed during the three phases of the discharge development: pre-peak, steady-state and afterglow. The spectral line emissions have different behavior during the pre-peak and the afterglow of the discharge – the lines with low upper-level energies get the maximum intensity in the pre-peak period, while the lines with high upper-level energies get the maximal intensity in the afterglow period. The time of the appearance of the afterpeak maxima and the afterpeak decay time are shorter for the ions than for the atoms. The results are explained primarily in terms of three-body recombination processes and ion mobilities. Carefully arranged and conducted experiment with a large amount of experimental data, together with analysis of excitation and deexcitation processes, could be useful for more precise modeling of μPGD, as well as a note for selection of adequate spectral lines and discharge conditions for more accurate analytical measurements.
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Source Journal
Journal of Analytical Atomic Spectrometry

The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.













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