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2006 J. Phys. A: Math. Gen. 39 3561-3573 doi: 10.1088/0305-4470/39/14/005
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Abstract. A simplified version of a time-dependent annular billiard is studied. The dynamics is described using nonlinear maps and we consider two different configurations for the billiard, namely (i) concentric and (ii) eccentric cases. For the concentric case and for a null angular momentum, we confirm that the results for the Fermi–Ulam model are recovered and the particle does not experience the phenomenon of Fermi acceleration. However, on the eccentric case the particle demonstrates unlimited energy gain and Fermi acceleration is therefore observed.
PACS numbers: 05.45.−a, 05.45Pq, 05.45.Gg
Print publication: Issue 14 (7 April 2006) |
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