Results 41 to 50 of about 1,698,158 (202)

Concurrent Empirical Magnetic Reconstruction of Storm and Substorm Spatial Scales Using Data Mining and Virtual Spacecraft

open access: yesFrontiers in Physics, 2021
Data mining (DM) has ushered in a new era of empirical magnetic reconstructions of the magnetosphere via application of the k-nearest neighbors (kNN) method.
Grant K. Stephens, Mikhail I. Sitnov
doaj   +1 more source

Geometry and linearly polarized cavity photon effects on the charge and spin currents of spin-orbit interacting electrons in a quantum ring

open access: yes, 2013
We calculate the persistent spin current inside a quantum ring as a function of the strength of the Rashba or Dresselhaus spin-orbit interaction. We provide analytical results for the spin current of a one-dimensional (1D) ring of non-interacting ...
Arnold, Thorsten   +3 more
core   +1 more source

Improved Lifetime Model of Energetic Electrons Due to Their Interactions With Chorus Waves

open access: yesGeophysical Research Letters
Chorus waves induce both electron acceleration and loss. In this letter, we provide significantly improved models of electron lifetime due to interactions with chorus waves.
Dedong Wang   +3 more
doaj   +1 more source

Multi-point observation of interplanetary shock–driven asymmetry of dayside inner-magnetospheric keV particles under geomagnetically quiet conditions

open access: yesFrontiers in Astronomy and Space Sciences
We present simultaneous multi-point observation of local-time asymmetry in keV ion and electron fluxes during the interplanetary (IP) shock impact on 19 April 2014 under geomagnetically quiet conditions.
Megha Pandya   +10 more
doaj   +1 more source

Circulating and persistent currents induced by a current magnification and Aharonov-Casher phase [PDF]

open access: yes, 1998
We considered the circulating current induced by the current magnification and the persistent current induced by Aharonov-Casher flux. The persistent currents have directional dependence on the direct current flow, but the circulating currents have no ...
Choi, Taeseung   +2 more
core   +1 more source

Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling

open access: yes, 2005
We analyze quantum charge pumping in an open ring with a dot embedded in one of its arms. We show that cyclic driving of the dot levels by a \textit{single} parameter leads to a pumped current when a static magnetic flux is simultaneously applied to the ...
E. N. Economou   +5 more
core   +1 more source

Persistent Currents of Single Mesoscopic Rings [PDF]

open access: yesEurophysics Letters (EPL), 1992
We study the stochastic fluctuations (from sample to sample) in the persistent current I() of mesoscopic rings threaded by a flux . We find that it is necessary to include the Coulomb interaction between the electrons. Then we obtain I21/2 ~ (L/l)I ~ evF/L; and h/e for the dominant period in .
Eckern, Ulrich, Schmid, Albert
openaire   +2 more sources

SIMULATION STUDY OF THE ENERGETIC NEUTRAL ATOM (ENA) IMAGING MONITORING OF THE GEOMAGNETOSPHERE ON A LUNAR BASE

open access: yesSolar-Terrestrial Physics, 2021
Since the moon’s revolution cycle is exactly the same as its rotation cycle, we can only see the moon always facing Earth in the same direction. Based on the clean particle radiation environment of the moon, a neutral atomic telemetry base station could ...
Li Lu   +6 more
doaj   +1 more source

Parity Effect in a mesoscopic superconducting ring

open access: yes, 2000
We study a mesoscopic superconducting ring threaded by a magnetic flux when the single particle level spacing is not negligible. It is shown that, for a superconducting ring with even parity, the behavior of persistent current is equivalent to what is ...
K Kang, Tinkham M.
core   +2 more sources

Development of a superconducting protection switch for the HERA P-ring: design study and demonstration models [PDF]

open access: yes, 1988
The electrical circuit of the HERA (Hadron Electron Ring Accelerator) proton ring (p-ring) is divided in octants so that in the case of a quench, the current has to be commutated to dumping resistors.
Haken, B. ten   +3 more
core   +3 more sources

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