Plasmachemical reactions are studied in rf and microwave discharges. Plasma polymerization is used for the deposition of selective permeable thin films, protective coatings and humidity detectors. The depositions of hard diamond-like carbon, boron nitride, SiOx and SixOyNz thin films have been conducted using a great variety of plasma-chemical methods. Reactions in nitrogen afterglow are studied by spectroscopical and electron spin resonance methods. An efficient restoration method of ancient excavated objects in high frequency plasma has been successfully developed and applied. A new type of ozonizer with a discharge electrode has also been developed.
Plasma diagnostic methods during the plasma-chemical reactions are used for understanding the kinetics of the plasma reactions. A new, quick spectroscopic method of rotational temperature determination based on the low resolution emission spectrum of N2 was developed as well. The Fabry-Perot interferometer is effectively used for spectroscopical study of the low-temperature plasma. At present, a fully automated experimental set-up with the RC 150 (Burleigh, USA) interferometer is available. This interferometer is controlled by microcomputers and uses the piezoeffect for scanning the line profile. The parameters of plasma as the temperature of neutral particles and the density of charged particles are evaluated from these profiles. Probe and microwave methods are used for these purposes as well. A new method for the detection of hydrocarbon traces in pure nitrogen flow was deleloped. This method is based on spectroscopical measurement of CN spectra. The kinetic constants for reactions in low temperature plasma are measured in a remote microwawe plasma reactor by means of electron spin resonance.
Electrical and power characteristics of discharges are determined and electrical discharges and plasma-chemical processes are studied using computer simulation.
The other research activity of the department is the investigati- on of the properties of thin films prepared by means of plasma-chemical deposition and vacuum evaporation. In particular, electrical and sorption properties of dielectric and metal thin films are studied for practical application. In addition, some selective sensors suitable for detection of various gases have also been developed. Thin films used in the optical industry are prepared here as well.
The Department has established archives for programs, data, papers etc. in physics (mainly for plasmaphysics). These archives are located at computer ftp.muni.cz in the directory pub/muni.cz/physics. These archives can be reached by an anonymous FTP or by gopher server gopher.muni.cz. At the present time, some programs for PC and some cross sections for electrons can be found in the archives. The Department would like to collect programs for calculations in physics (mainly for PC).
The Department would also like to collect physical constants and experimental data (e.g. cross sections and swarm parameters ters), which are important for other calculations or for comparison with the results of others studies. Interested scholars are invited to send us preprints and reports for these archives. All files in the archives are public domain and can be obtained using computer network.
Your contributions can be sent by anonymous FTP to directory pub/muni.cz/incoming/physics. Please, send an e-mail about it to trunec@sci.muni.cz.
The Department participates in the education of teachers and specialists in physics, biophysics and engineering optics. Currently in the plasma physics 5 4th year students 5 5th years students are working on their diploma thesis at the Department.
Department of Physical Electronics
Faculty of Science
Masaryk University
Kotlarska 2
611 37 Brno
Czech Republic
phone: +420-5-41129426
fax: +420-5-41211214
Head of the Department : prof. RNDr. Jan Janca, DrSc.
Professors : prof. RNDr. Vratislav Kapicka, DrSc.
Senior Lecturers : doc. RNDr. Zdenek Ondracek, CSc.
doc. RNDr. Ladislav Sodomka,CSc.
doc. RNDr. Antonin Talsky, CSc.
doc. RNDr. Jiri Drimal, CSc.
Lecturers : RNDr. Ctibor Tesar, CSc.
RNDr. David Trunec, CSc.
Research Assistants : RNDr. Antonin Brablec, CSc.
Ing. Josef Kratochvil
RNDr. Jiri Novak
doc. RNDr. Vladimir Vetterl, CSc.
Iva Gurecka: Determination of temperature of microwawe
discharge from molecular spectra,
Vilem Zvonicek: Study of recombination of atomic oxygen and
reactions with TEOS,
Lenka Zajickova: Optical properties of carbon based thin
films,
Pavel Krystof: Plasmochemical Deposition of SixOyCz thin
films.
In Academic year 1993/1994 the following PhD theses were
presented and defended :
Pavel Zemanek: Mode Polarization Stability in Lasers with
Internal Mirrors and Laser Cooling of Atoms
in a Strong Standing Gaussian Wave.
Grant No 202/93/2118 : Plasmachemical Processes in Plasmas and on
the Boundary with Solid State, Grant Applicant - J.Janca
Grant No 202/93/1022 : Generation of Non-Equilibrium Plasma for
Study of Plasmachemical Processes in flowing Media at Atmospheric
Pressure, Common grant with Institute of Plasmaphysics Czech
Academy Prague. Grant Joint Applicant - J. Janca
Grant No 202/94/0490 : The Study of Processes Arising in Using the
Plasmochemical Method for Restoring and Conserving Archeological
and Museum Objects. Grant Applicant - J. Janca
Grant No 202/94/ : Experimental and Theoretical Study of
Plasmachemical Systems with Plasma Jet, Common Grant with
Department of Vacuum Physics, MFF UK, Prague. Grant Applicant
- V. Kapicka
Grant No 202/94/1228 : Investigation of Physical and Chemical
Processes in Glow Discharge under Atmospheric Pressure.
Grant Applicant - J. Drimal
Grant No 1203-1994 : Lectures and Summer School on Elementary
and Chemical Processes in Plasma. Professors from abroad
(France, Germany, Russia, Slovakia, Netherlands). Grant
Applicant - J. Janca
Grant No 1222-1994 : A Common Laboratory for the Development of
Diagnostics and Depollution Methods of Organic Pollutants.
Grant Applicant - J. Janca
Grant No 1169-1994 : Usage of Computers in Physical Laboratory
Measurements, Grant Applicant - V. Kapicka
Grant No P264/16/1994 : The Implementation of Modern Measuring Methods
for Teaching at Secondary Schools, Grant Applicant - Z. Ondracek
Grant No 1216-1994 : The Creation of Archives of Programs and
Textbooks for the Teaching of Physics in the Computer Network of
Masaryk University, Grant Applicant - Z. Ondracek
PEGAS (Advanced Material Technology), collaboration with VUT, Brno
NCC JEP No 2262 (New Curricula and Courses in Engineering
Education), collaboration with CVUT, Praque
PECO - (FSDTA) 08469 contract No ERBCIPACT 924034 : Fundamental
Studies of Discharges in View of Their Technological
Applications, coordinator Prof. A.M. Pointu, University of
Paris Sud
Copernicus project No 972P sec. 3, (1995-1997) : Barrier
coatings in the packaging industry, coordinator Dr. M.
Hopkins, University of Dublin
Drimal J. and Trunec D., Monte Carlo Method - foundation and
aplications in physics, Dep. of Phys. Electronics, Brno 1994
[1] Janca J.,Talsky A.,Krcma F.,Ricard A.,Hochard L.,CN Chemilu-
miniscence in N2+CH4 microwave afterglow at very low tempe -
ratures, Plasmachemistry and Plasmaprocessing, 14, 197(1994)
[2] Teply J.,Dressler M.,Janca J.,Tesar C.,Destruction of Organic
Compounds in HF discharge Plasma at Reduced Pressure, Plasma-
chemistry and Plasmaprocessing, in print
[3] Janca J.,Talsky A.,Zvonicek V., Kinetics of O2+TEOS Gas-Phase
Chemical Reactions in a Remote Microwave Plasma Reactor with
ESR, Proc. ESCAMPIG 1994, Noordwijkerhout, The Netherlands, p.364
[4] Janca J.,Solc M.,Vetesnik M., Laboratory Spectra of C60 and
Related Molecular Structures, Proc. Symp. Boulder, Colorado
NASA Conf. Public. 10144, p.53