ELFT HÍRADÓ

[StatFizSzeminar <statfiz AT glu.elte.hu>]

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                    ELTE TTK Fizikai Intézet
                STATISZTIKUS FIZIKAI SZEMINÁRIUM


                        2013. október 9.
                         szerda, 11 óra

                   Francisco Gonzalez Montoya

Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, 
                         Cuernavaca

  "Scattering of an electric charge off a perturbed magnetic dipole"


We take the scattering of electrons off a perturbed magnetic dipole as 
an example for demonstrating chaotic scattering systems with 3 open 
degrees of freedom. We explain the connection between the chaotic 
invariant set, the scattering functions and the doubly differential 
cross section. The ideal magnetic dipole has rotational symmetry; 
therefore, the dynamics has a conserved angular momentum, and the 
chaotic set of the 3 degrees of freedom system can be represented as a 
stack of chaotic sets of the reduced 2 degrees of freedom system where 
the value of the conserved angular momentum serves as stack parameter. 
Any real magnet deviates from a perfect dipole, but it is possible to 
explain why the qualitative properties of the cross section are robust 
against perturbations of the system.


     1117, Budapest, Pázmány P. sétány 1/A, Északi tömb 2.54
                honlap: http://glu.elte.hu/~statfiz

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