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Projects source: E-CRIS

The electrical breakdown of gases, surface processes and applications

Research activity

Code Science Field
B003  Biomedical sciences  Ecology 
P220  Natural sciences and mathematics  Nuclear physics 
P240  Natural sciences and mathematics  Gases, fluid dynamics, plasmas 
P305  Natural sciences and mathematics  Environmental chemistry 
Keywords
Electrical breakdown ofgas,timedelay,distribution,discharge,surface process,environmental protection
Organisations (2) , Researchers (2)
0117  University of Nis, Faculty of Sciences and Mathematics
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  10236  Vidosav Lj. Marković  Gases, fluid dynamics, plasmas  Head  2011 - 2019 
2.  11548  PhD Vladan Lj. Pavlović  Physics  Researcher  2012 - 2019 
0099  University of Nis, Faculty of Medicine
Abstract
The main topic of this proposal is the electrical breakdown of gases by high voltage pulses of different shapes in the wide range of pressures and voltages in order to complete the theory and statistics of dependent electron avalanches (overlapping in time and space) and the breakdown delay theory for different breakdown mechanisms, as well as the measurements and modeling of the breakdown delay times, voltages, probabilities and energies for the most important molecular and inert gases on sealed and flowing gas systems and supported by spectroscopic and other methods. Study of gas-surface and plasma-surface interactions and development of the model of surface processes in stationary and transient regimes by combining the macro-kinetic transport with the model of surface processes to determine the mechanisms, rate coefficients, adsorption isotherms and sticking probabilities on surfaces; explanation of the surface memory effect caused by surface charges and field emission, as well as the influence of surface preparation, pressure and temperature on the surface rate coefficients. Study of cathode coatings formed by evaporation, sputtering and galvanic deposition by the time delay measurements; electrical breakdown of gas mixtures, films and coatings; applications of high voltage pulses, pulsed and high frequency discharges and ionizing and non-ionizing radiation in the treatment of materials and physical, chemical and biomedical aspects in the environmental protection.
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