Charge motion in superimposed coulomb and magnetic fields

Gajewski, Ryszard

doi:10.1016/0031-8914(70)90131-x

Cited by 25 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the motion of the positron around the antiproton in a magnetic field is not quite as simple as this. In certain situations, the positron can remain bound to the antiproton, even though it has negative binding energy [117]. The analysis of this effect is far more involved, and we will ignore it.…”

Section: Field-ionisationmentioning

confidence: 99%

Antihydrogen Formation, Trapping and Dynamics

Butler

2011

Preprint

View full text Add to dashboard Cite

Antihydrogen, the simplest pure-antimatter atomic system, holds the promise of direct tests of matter-antimatter equivalence and CPT invariance, two of the outstanding unanswered questions in modern physics. Antihydrogen is now routinely produced in charged-particle traps through the combination of plasmas of antiprotons and positrons, but the atoms escape and are destroyed in a minuscule fraction of a second.The focus of this work is the production of a sample of cold antihydrogen atoms in a magnetic atom trap. This poses an extreme challenge, because the state-of-theart atom traps are only approximately 0.5 K deep for ground-state antihydrogen atoms, much shallower than the energies of particles stored in the plasmas. This thesis will outline the main parts of the ALPHA experiment, with an overview of the important physical processes at work. Antihydrogen production techniques will be described, and an analysis of the spatial annihilation distribution to give indications of the temperature and binding energy distribution of the atoms will be presented. Finally, we describe the techniques needed to demonstrate confinement of antihydrogen atoms, apply them to a data taking run and present the results, making a definitive identification of trapped antihydrogen atoms. i Declarations and Statements Declaration

show abstract

Section: Field-ionisationmentioning

confidence: 99%

Antihydrogen Formation, Trapping and Dynamics

Butler

2011

Preprint

View full text Add to dashboard Cite

show abstract

“…the motion of the electron may be treated as the motion of a particle in the 2D effective 'potential' (see e.g. [1,5,8])…”

Section: Equations Of Motionmentioning

confidence: 99%

“…when the energy W = v 2 /2 − φ is less than the minimum of the effective potential at infinity U = U m = (B/2)(J + |J |), (see e.g. [1,8]). However, this condition is sufficient but not necessary.…”

Section: Condition For Trappingmentioning

confidence: 99%

“…Even in given static fields of a comparatively simple spatial configuration, particle trajectories may be so intricate that the corresponding equations of motion can be solved only numerically. An example is provided by the charge motion in superimposed Coulomb and magnetic fields [1]. Despite the seeming simplicity of the problem, the equations of the charge motion are not integrable analytically, and the detailed analysis of the charged particle trajectories calls for numerical calculations [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence of the non-integrable nature of the equations of motion, it is not feasible to solve rigorously the corresponding Vlasov kinetic equation jointly with the 3D Poisson equation even with the aid of supercomputers. The reason is that the structure of the distribution function turns out extremely complex even in an electrostatic potential well of a given form [1][2][3][4], while the actual spatial dependence of the selfconsistent potential is not known in advance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations