*ITAMP Lunch Seminar*
*Speaker:* Yehuda B. Band (Ben-Gurion University)
*Date:* Monday, Jan 29th
*Time:* 12:00-1:00 pm
Includes Pizza.
*Title: *Dynamics of a Magnetic Needle Magnetometer: Sensitivity to
Landau-Lifshitz-Gilbert Damping and External Noise Decoherence
*Abstract: *We analyze the dynamics of a single-domain magnetic needle,
which can be used as a high precision magnetometer. We determine the
uncertainty of the magnetometer due to Gilbert dissipation and the
associated internal magnetic field fluctuations. We then discuss the
effect of external magnetic noise. We also consider needle dynamics in an
inhomogeneous magnetic field (e.g., a Ioffe-Pritchard trap) and discuss
magnetic levitation and stability.
*Location: *B-106 @ Center for Astrophysics (60 Garden Street)
*Directions: *After entering the lobby of the CfA, turn right to enter the
hallway of the B building. In the hallway, turn right again, B-106 will be
at the end of the hallway on the left side.
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