Results 11 to 20 of about 1,708,012 (159)

Persistent current in a ring coupled to an external fermionic reservoir [PDF]

open access: yes, 2003
We study the energy spectrum and the persistent current in an ideal one-dimensional mesoscopic ring coupled to a fermionic reservoir. We find that the tunnel coupling in general leads to the suppression of the persistent current. However, with increasing
Aharonov   +14 more
core   +1 more source

Partitioning Hückel–London Currents into Cycle Contributions

open access: yesChemistry, 2021
Ring-current maps give a direct pictorial representation of molecular aromaticity. They can be computed at levels ranging from empirical to full ab initio and DFT.
Wendy Myrvold   +2 more
doaj   +1 more source

Charge exchange contribution to the decay of the ring current, measured by energetic neutral atoms (ENAs) [PDF]

open access: yes, 2001
In this paper we calculate the contribution of charge exchange to the decay of the ring current. Past works have suggested that charge exchange of ring current protons is primarily responsible for the decay of the ring current during the late recovery ...
Henderson, M. G.   +4 more
core   +2 more sources

Driving ionospheric outflows and magnetospheric O+ energy density with Alfvén waves

open access: yesGeophysical Research Letters, 2016
We show how dispersive Alfvén waves observed in the inner magnetosphere during geomagnetic storms can extract O+ ions from the topside ionosphere and accelerate these ions to energies exceeding 50 keV in the equatorial plane.
C. C. Chaston   +3 more
doaj   +1 more source

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

Evolutions of equatorial ring current ions during a magnetic storm

open access: yesEarth and Planetary Physics, 2020
In this paper, we present evolutions of the phase space density (PSD) spectra of ring current (RC) ions based on observations made by Van Allen Probe B during a geomagnetic storm on 23–24 August 2016.
Zheng Huang, ZhiGang Yuan, XiongDong Yu
doaj   +1 more source

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

Ring current dynamics in the Earth's inner magnetosphere

open access: yes地球与行星物理论评, 2022
The terrestrial ring current, flowing near the equator at the altitude of 2 RE~7 RE, is one of the most significant electric current systems of the Earth's magnetosphere.
Yan Zhuang, Chao Yue
doaj   +1 more source

A Storage Ring for Neutral Atoms [PDF]

open access: yes, 2001
We have demonstrated a storage ring for ultra-cold neutral atoms. Atoms with mean velocities of 1 m/s corresponding to kinetic energies of ~100 neV are confined to a 2 cm diameter ring by magnetic forces produced by two current-carrying wires. Up to 10^6
B. K. Teo   +22 more
core   +2 more sources

Another way of deriving the ring current decay time during disturbed periods

open access: yesAnnals of Geophysics, 1995
Coupling parameter, E, and the total energy dissipated by the magnetosphere, UT, are determined for six disturbed periods, following three known criteria for UT computation.
J. R. Manzano, M. M. Zossi de Artigas
doaj   +1 more source

Home - About - Disclaimer - Privacy