Charged particle motion in axisymmetric toroidal magnetic fields is analysed within the context of canonical Hamiltonian guiding centre theory. A transformation to variables measuring drift orbit deviation from a field line introduced and an analytical action-angle obtained, under zero width approximation. The latter used provide compact formulas for orbital spectrum motion, namely bounce/trans...

In scalar-tensor theories of gravity with torsion, the gravitational field is described in terms of a symmetric metric tensor g, a metriccompatible connection ∇ with torsion, and a scalar field φ. The main aim is to explore an interaction of a charged perfect fluid and a scalar field φ in a background electromagnetic and gravitational field described by {g, ∇, φ}. The interaction is based on an...

Charged-particle motion is studied in the self-electric and self-magnetic fields of a well-matched, intense charged-particle beam and an applied periodic solenoidal magnetic focusing field. The beam is assumed to be in a state of adiabatic thermal equilibrium. The phase space is analyzed and compared with that of the well-known Kapchinskij-Vladimirskij (KV)-type beam equilibrium. It is found th...

The problem of the charged-particle motion in an axisymmetric magnetic-dipole geometry is used to assess validity Hamiltonian guiding-center theory, which includes higher-order corrections associated with polarization induced by magnetic-field nonuniformity. When a magnetically confined orbit regular (i.e., its magnetic moment adiabatically invariant), approximation, conserves both energy and a...