STANDARD TEMPERATURE AND PRESSURE PLASMAS


Ovidiu S. Stoican, PhD, CS3, experience in the following areas: plasma physics, electrodynamic traps, computational physics, nuclear quadrupole resonance (NQR), diode laser applications, instrumentation and applied electronics

RESEARCH ACTIVITIES

 Electrodynamic traps
Microparticles cloud confined along the longitudinal axis of the linear trap
 Plasma sources operating at atmospheric pressure and interaction plasma-electromagnetic field
The head of the plasma jet generator operating at atmospheric pressure during operation

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RELEVANT RESULTS

 Experimental model of a plasma jet generator operating at atmospheric pressure.
The supply electrical circuit consists of two voltages sources parallel connected. One of them is a high voltage pulse generator (Upeak=-4kV, f=1-100Hz) whereas the second one is a conventional dc voltage source (for normal operation, adjustable in the range from -600V to -1000V). After the plasma plume is initiated, the electrical discharge is sustained only by dc source. This approach improves the circuit supply reliability, energy efficiency and diminishes electromagnetic perturbations. Its design is based on commercial available components, allowing to be implemented as a product by an innovative start-up.

PUBLICATIONS
(selection)
 A. Journals and international conferences
  1. O. S. Stoican, High voltage pulses circuit for generating a plasma plume at atmospheric pressure, Romanian Reports in Physics, Vol. 71, No. 1, article no. 406 (2019)
  2. O. S. Stoican, Voltage Reversal in Series-connected Three 1.5V AAA Alkaline Batteries, Int. J. Electrochem. Sci., vol. 14, No. 1, pp. 897 - 904 (2019)
  3. O. S. Stoican, Plasma jet generator with hybrid electrical supply, ISCP -INDLAS 2018, September 3-7, 2018, Alba-Iulia, Romania, pag 179
  4. O. S. Stoican, High voltage pulses circuit for generating a plasma plume at atmospheric pressure, 17th International Conference on Plasma Physics and Applications (CPPA), June 15-20, 2017, Bucharest, P3-04, p88.
  5. O. S. Stoican, Experimental study of an atmospheric pressure plasma ignited periodically by high voltage pulses, 16th IBWAP, July 7-9, 2016, ConstanĊ£a, Romania, S2P24, p.99
  6. O. S. Stoican, Study on the axial distribution of the stored microparticles in an electrodynamic trap by using software image processing, Rom. Journ. Phys, vol. 61, Nos. 3-4, pp. 536-542 (2016)
  7. O. S. Stoican, Experimental setup aimed to study the electrical impedance variations of a plasma column in a wide frequency range, Romanian Reports in Physics, vol. 66, no. 3, 746-753 (2014)
  8. G. Visan, O. S. Stoican, An experimental setup for the study of the particles stored in an electrodynamic trap, Rom. Journ. Phys.,Vol. 58, Nos. 1-2, pp. 171-180 (2013)
  9. O. S. Stoican, Studies on the Interaction Between an Acoustic Wave and Levitated Microparticles in Waves in Fluids and Solids, Ruben Pico Vila (Ed.), 2011, ISBN: 978-953-307-285-2, InTech
  10. O.S. Stoican, An atmospheric pressure plasma source driven by a train of monopolar high voltage pulses superimposed to a dc voltage, European Physical Journal-Applied Physics, 55, 30801 (2011)
  11. O. S. Stoican, Galvanic isolated voltage source using a single photodiode, Rev. Sci. Instrum. 81, 046102 (2010)
  12. O. S. Stoican, Study of RF Perturbations Due to a Hollow-Cathode Discharge, Rom. Journ. Phys., Vol. 55, Nos. 7-8, pp. 800-805 (2010)
  13. O. S. Stoican, Period shift of a discharge tube relaxation oscillator due to a weak microwave field, Japanese Journal of Applied Physics, 48, 070218 (2009)
  14. O. S. Stoican, Frequency shift of a relaxation oscillator due to an external electrode, Rom. Journ. Phys., Vol. 54, Nos. 3-4, pp. 385-390 (2009)
  15. O. S. Stoican, L. C. Dinca, G. Visan, S. Radan, Acoustic detection of the parametrical resonance effect for a one-component microplasma consisting of the charged microparticles stored in the electrodynamic trap, Journal of Optoelectronics and Advanced Materials, Vol. 10, No. 8, August 2008, pp. 1988 -1990 (2008)
  16. V. Gheorghe, L. Giurgiu, O. S. Stoican, D. Cacicovschi, R. Molnar, B. Mihalcea, Ordered structures in a variable length a. c. trap, Acta Physica Polonica A, 93, 4, pp. 625-629 (1998)
  17. V. Florescu, S. Patrascu, O. S. Stoican, Systematic study of 1s - ns and 1s - nd two photon transitions of hydrogenlike atoms, Phys. Rev. A, 36, 5, pp. 2155-2166 (1987)
 B. Patents
 C. Patents under review

 Involvement in research projects  International cooperation
 Contact:
NATIONAL INSTITUTE FOR LASER, PLASMA AND RADIATION PHYSICS (INFLPR)
Plasma Physics and Nuclear Fusion Departament
email: ovidiu.stoican@inflpr.ro

2019