Electric Field Structure above Aurora: Recent Observations.

Temperature dependence of electric field noise above gold surfaces.

Electric field noise from fluctuating patch potentials is a significant problem for a broad range of precision experiments, including trapped ion quantum computation and single spin detection. Recent results demonstrated strong suppression of this noise by cryogenic cooling, suggesting an underlying thermal process. We present measurements characterizing the temperature and frequency dependence...

Large parallel electric fields, currents, and density cavities in dispersive Alfvén waves above the aurora

[1] Large parallel electric fields (Ek > 10 mV/m) are sometimes observed with intense filamentary field-aligned currents (Jk > 10 mA/m 2 mapped to 100-km altitude) on transverse scales where kxc/wpe 1 above the auroral oval. The ratio of the transverse electric (Ex) and magnetic field (By) variations is approximately the local Alfvén speed and increases with decreasing transverse scale in a man...

Analysis of Electric Field and Polarization of SF6 Circuit Breaker to Approach a Suitable Structure

Abstract: The application of electric field theory to widely different aspects of electrical insulation has led to more understanding the phenomena. Electric fields may be considered as the main reason for insulation failure. The purpose of this paper is to modify importance of analyzing electric field in insulation design. The SF6 circuit breaker is chosen as case study that encounters cri...

Recent Geodynamo Simulations and Observations of the Geomagnetic Field

[1] In 1995, two groups [Kageyama et al., 1995; Glatzmaier and Roberts, 1995a, 1995b] reported results of numerical integrations of fully three-dimensional, fully nonlinear dynamos. Their papers were precursors of a stream of such models that have focused particularly on the geodynamo. They provide us, in unprecedented detail, with spectacular realizations of interesting geomagnetic field behav...

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