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[Fizinfo] Szemináriumok - Seminars: Donkó Zoltán

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  • From: Szeminárium koordinátor <sem-admin AT>
  • To: SZFI Szeminárium <seminar AT>,Fizinfo <fizinfo AT>
  • Cc: Fizinfo <fizinfo AT>
  • Subject: [Fizinfo] Szemináriumok - Seminars: Donkó Zoltán
  • Date: Thu, 6 Oct 2022 06:00:01 +0200 (CEST)
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SZFI SeminarDonkó ZoltánWigner RCP SZFIThree decades in low temperature
plasma physicsTuesday, 11 October 2022, 10:00, KFKI Campus, Bldg. 1, 2nd
floor, Conference RoomThe vast majority of the matter in the Universe is in
ionised (i.e., plasma) state, of which the properties differ significantly
from those of the neutral gaseous state. The electrical conductivity of this
type of matter and the light emission caused by excitation processes makes
them possible to use, e.g., in light sources and lasers. The active species
created in collision processes between the constituents of plasmas serve as
the basis of a new area of plasma medicine, where plasma sources are used for
surface modification of, e.g., dental implants and aid curing cancerous
tissues. These new applications are less known by society, similarly to the
high-tech applications of plasma technologies in the microelectronics
industry that provides us with all the computing and communication equipment
of our modern age. At the same time, electrical discharges exhibit a wide
range of physics phenomena of which the understanding represents a challenge
both in experimental and simulation studies. Electrical gas discharges are
complex systems in which the different (charged and neutral) components
typically constitute weakly coupled subsystems that are characterized by
distinct velocity distribution functions. In the case of electrically charged
species, the distribution functions differ significantly from the
Maxwell-Boltzmann type, which is caused by the specific energy gain and loss
mechanisms taking place in the interactions of the charged species with the
electric field and with other charged and neutral species. In the case of the
different species (electrons, ions, as well as electrically charged
microscopic dust particles), these dynamics take place on the largely
disparate length and time scales. As a consequence of this, the weakly
ionized low temperature plasmas of electrical gas discharges are
non-equilibrium systems from the thermodynamics point of view, and therefore,
their accurate description requires methods of kinetic theory. The talk will
review some of the above mentioned physics phenomena studied by means of
state-of-the-art experimental techniques and computational tools.&nbsp;Minden
érdeklődőt szívesen látunk! - Everyone is welcome to attend.Attila
Nagysem-admin AT

  • [Fizinfo] Szemináriumok - Seminars: Donkó Zoltán, Szeminárium koordinátor, 10/06/2022

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