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Activity Number:
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345
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Type:
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Contributed
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Date/Time:
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Tuesday, August 8, 2006 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Physical and Engineering Sciences
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| Abstract - #305658 |
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Title:
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A Monte Carlo Method To Simulate the Stochastic Behavior of a Field of Forces
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Author(s):
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Elizabeth Martinez Gomez*+ and Hector A. Perez de Tejada Jaime and Hector J. Durand Manterola
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Companies:
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National Autonomous University of Mexico and National Autonomous University of Mexico and National Autonomous University of Mexico
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Address:
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Heriberto Frias 238-1, Col.Narvarte,C.P.03020, Mexico D.F., , Mexico
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Keywords:
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stochastic process ; Monte Carlo method ; acceleration ; energization ; field of forces
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Abstract:
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The acceleration of charged particles to suprathermal energies is of potential interest in astrophysics. The simplest mechanism is the acceleration in an electrostatic field parallel to the magnetic field. Consequently, one is led to the concept of stochastic acceleration in which the electric field is random in some sense and, although particles both gain and lose energy in elementary interactions, they gain energy on average. This random process (statistical treatment) usually is based on either a Fokker-Planck or a quasilinear approach. We propose a model in which the equation of motion includes, among others, the force due to a stochastic field simulated by a Monte Carlo method. We apply this model to Saturn's magnetosphere and find that charged particles injected with low energies can be accelerated strongly to reach much higher energies and transported outward.
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