Dusty Plasma protecting ozone layer
Dusty Plasma in Air and its Influence upon Contamination Destroying the Ozone Layer
Tech Area / Field
- ENV-APC/Air Pollution and Control/Environment
3 Approved without Funding
VNIIEF, Russia, N. Novgorod reg., Sarov
- Institute of General Physics named after A.M. Prokhorov RAS, Russia, Moscow
Project summaryThe main objective of the present Project is the experimental and theoretical studying of gas discharge in the air containing liquid and solid microparticles with sizes 10-100 jam. We propose to create”dusty" plasma in such a medium by means of different methods, namely, by microwave, laser and surface discharges.
As a results of the Project it will be investigated a dusty plasma as a medium that acts on the CFCs contamination, which are contained in air and destroy the ozone layer of the Earth atmosphere. The most outstanding distinction of proposed Project is including in uniform air a new component: microparticles in form of water droplets, aerosols or solid particles. Taking into account these components we bring laboratory experiments and theoretical modeling closer to the real atmosphere conditions.
Creation of dusty plasma may sufficiently effects upon the efficiency (by several times) of gas-discharge cleaning of the atmosphere of CFCs. It may be supposed that new CFC's destruction or their expelling mechanisms may be discovered. Besides the problem dusty plasmas becomes very important for fundamental physics.
As a basic gas-discharge method we consider the microwave method for dusty plasma production. On the one hand this is of interest for ecological applications, since the microwave gas discharge excited by microwave beams holds promise for solving the problem of global atmosphere cleaning. On the other hand, the possibility for exciting discharges in free space makes these experiments very important from the standpoint of fundamental gas-discharge physics because it allows us to compare the experimental data with the theoretical predictions more accurately.
Determination of thresholds of dusty plasma production by microwaves, laser or surface "slipping" discharge is supposed as well as investigation of plasma dynamics and its properties. Development of more or less rigorous physical and mathematical models of dusty plasma creation and its interaction with CFCs is supposed.
General Physics Institute has a broad spectrum of powerful microwave generators in the frequency band of 0.4-1.6 cm. Such frequency band is created by means of various type experimental devices containing the magnetron generators, electron cyclotron resonance masers and some relativistic generators. Pulse power and energy of these devices in some cases are the maximum in the world. This leads to the highest concentrations of energy in a microwave beam, which is very important for creations of the discharge. General Physics Institute have so all the possibilities for to solve all proposed experimental problems.
General Physics Institute as well as VNIIEF has a long-standing experience of theoretical investigations of gas-discharge plasmas and especially microwave plasmas. This Project opens up a new theoretical area, namely, theory of dusty microwave plasmas.
Besides these problems the Project allows to receive data concern to the possibility of cleaning of wastewater by means of microwave dusty plasmas. This line of the inquiry is compatible with the works carried out by Prof. Vitaly Bystritskii Laboratory in the University of California, Irvine, USA, as well as in the Los Alamos National Laboratory (USA). Problem of cleaning of waste water using dusty microwave plasma is interesting also for Institute of Plasma Physics, Milan, Italy (Division headed by Prof. G.Bonizzoni). The resolution of this issue will have to realize in the course of joint efforts of VNIIEF, GPI, University of California and Institute of Plasma Physics in Milan.
Rutherford Appleton Laboratory in England (Prof. R.Bingham) will take part in development of theory of dusty microwave plasma. Prof. R.Bingham is one of the outstanding expert and organizer of international cooperation in the area of dusty plasma physics.
Prof. M.Caplan from Lawrence Livermor National Laboratory will take part in the analysis of application of powerful microwave generators based on the relativistic electron beams for cleaning of an environment from CFCs distracting ozone layer.
This Project allows changing the orientation of 7 VNIIEF's scientists taking part previously in the nuclear weapon testing and will favor integration of these scientists into the world scientific association.
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