Sumários

Interrupção lectiva

11 março 2020, 14:00 • João Manuel Gonçalves de Sousa Oliveira

Não foi leccionada aula devido a interrupção lectiva.

Motion of a particle in an electromagnetic field. Examples.

6 março 2020, 17:00 • João Manuel Gonçalves de Sousa Oliveira

Magnetic mirrors: location of mirror in terms of initial pitch angle. Loss cone.
Examples: calculation of escape flux for atomic hydrogen in the atmosphere of Earth; cyclotron frequency and Larmor radius for plamsas; speed of gravitational drift and gradient drift in Earth's atmosphere.

Motion of a charged particle in an eletromagnetic field.

6 março 2020, 08:00 • João Manuel Gonçalves de Sousa Oliveira

Concept of guiding center.
Drifts due to gravitational field, inhomohomogeneous magnetic field (gradient drift) and curvature drift.
Adiabatic invariants: magnetic moment.
Magnetic mirrors.

Motion of a charged particle in an electromagnetic field

4 março 2020, 14:00 • João Manuel Gonçalves de Sousa Oliveira

Maxwell'sequations for the electromagnetic field. Lorentz force.
Gyration of a particle in a homogeneous magnetic field. Cyclotron frequency and Larmor radius.
Pitch angle.
Magnetic moment.
Drift of particle in an electric field.
Drift of a particle in a force field perpendicular to the magnetic field.

Missão.

28 fevereiro 2020, 17:00 • João Manuel Gonçalves de Sousa Oliveira

Missão.