BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Available energy of magnetically confined plasmas
DTSTART:20190514T103000
DTEND:20190514T113000
DTSTAMP:20260917T070406Z
UID:4213126106d283f67090162c8cf4a587f0124b8eafc06d3daf6fe1eb
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Per Helander\n\nMax Planck Institute for Plasma Physics\
 , Greifswald\, Germany\nIn this talk\, the energy budget of a collisionles
 s plasma subject to electrostatic fluctuations is studied. In particular\,
  the excess of thermal energy over the minimum accessible to it under vari
 ous constraints that limit the possible forms of plasma motion is consider
 ed. This excess measures how much thermal energy is “available” for co
 nversion into plasma instabilities\, and therefore constitutes a nonlinear
  measure of plasma stability. The “available energy” defined in this w
 ay becomes an interesting and useful quantity in situations where adiabati
 c invariants impose non-trivial constraints on the plasma motion. For inst
 ance\, microstability properties of certain stellarators can be inferred d
 irectly from the available energy\, without the need to solve the gyrokine
 tic equation. The technique also suggests that an electron-positron plasma
  confined by a dipole magnetic field could be entirely free from turbulenc
 e.\n 
LOCATION:PPB 019 https://plan.epfl.ch/?room=PPB019
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR