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Magnetic Fields and Rotational Diffusion

by Thadis
Tags: diffusion, fields, magnetic, rotational
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Jun12-14, 06:45 PM
P: 44
Hello, I am having to find the rotational diffusion of a magnetic particle inside of water. I already have a diffusion coefficient but I do not know how to take into account the restoring force that the particle will feel from the magnetic field.

The info that I know is:
B-Field Strength
m-magnetic moment
D-rotational diffusion coeffiecent

I have been using the online program Hydra++ to get the rotational diffusion coeffiencent.

Does anyone know how to take into account the restoring force of the magnetic field? Thank you.
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Jano L.
Jun15-14, 07:05 AM
PF Gold
P: 1,146
The particle will experience torque (moment of force)

\boldsymbol{\tau} = \mathbf m  \times \mathbf B

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