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- 12Physics, Department of/Journal Articles (Physics)
- 10Graduate and Postdoctoral Studies (GPS), Faculty of
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- 1Earth and Atmospheric Sciences, Department of
- 1Earth and Atmospheric Sciences, Department of/Journal Articles (Earth and Atmospheric Sciences)
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2005
Kabin, Konstantin, Marchand, Richard, Lu, J. Y., Rankin, Robert, Tikhonchuk, Vladimir T.
It is shown that perpendicular gradients in shear Alfvén wave (SAW) dispersion regulate the localization of wave power on nightside geomagnetic L-shells where narrow Field Line Resonances (FLRs) form. We estimate the timescale for this process, ω0tc = 1/equation image, and demonstrate that it is...
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Spring 2017
The effect of partial coherence of a probe on the spectrum of Thomson scattered radiation from plasma is investigated. The coherence of a probe is described in terms of the electric field Gaussian correlation function of the finite correlation time (longitudinal coherence) and the finite...
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Theory and Application of Thomson Scattering to Particle Transport and Magnetic Field Measurements in Laser-Produced Plasmas
DownloadSpring 2023
The particle transport, plasma currents, and magnetic fields were investigated in laboratory plasmas, both with the Optical Thomson Scattering (OTS) diagnostic and in theory and numerical simulations. %despite the presence of hot ion tails, which would be more suppressed by collisions in real...
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2002
Zank, G. P., Lu, J. Y., Rankin, Robert, Marchand, Richard
The propagating source method for solving the time-dependent Boltzmann equation describing particle propagation in a magnetically turbulent medium is extended to a more realistic case that includes focusing and adiabatic deceleration. The solutions correspond to beam propagation in the solar...
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1999
Tikhonchuk, V. T., Voronkov, I., Samson, J. C., Rankin, Robert
The three-dimensional, nonlinear evolution of a shear how (or Kelvin-Helmholtz (KH)) instability driven by a large-amplitude shear Alfven wave (SAW) in the Earth's magnetosphere is studied by using numerical solutions to the complete set of ideal magnetohydrodynamic equations. An initial setup is...
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Self‐consistent electron acceleration due to inertial Alfvén wave pulsesournal of Geophysical Research: Space Physics, 110(A10), [pp
Download2005
Watt, Clare E. J., Wright, D. M. , Rankin, Robert, Rae, I. Jonathan
We present self-consistent kinetic simulations of the electron response to finite duration shear Alfven wave pulses in a magnetized plasma. In Earth's magnetosphere, the evidence suggests that parallel electric fields in inertial scale shear Alfven waves can accelerate electrons in the...
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1984
Rankin, Robert, Gardner, L. R. T., Barr, H. C., Boyd, T. J. M.
The effects of a magnetic field on the Raman and two‐plasmon decay instabilities are studied in the region of the quarter‐critical density of laser produced plasmas where both are coincident. Two‐plasmon decay of the incident extraordinary wave into two upper‐hybrid waves may now occur in the...
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Putative ante-mortem indicators of Alzheimer’s dementia: Analysis of fluid biomarker and neuroimaging studies
DownloadSpring 2019
Dementia is a clinical state, characterized by symptoms indicative of deterioration of memoryand cognitive functions that interferes with social or occupational functioning. According to2018 statistics, around 50 million people are living with dementia, and this number will increaseto 131.5...
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Optimization, adaptation and application of protein misfolding cyclic amplification to detection of prions in blood plasma
DownloadFall 2010
The PMCA assay was optimized for adaptation to low level detection of PrPSc in hamster plasma. Evaluation of numerous key variables of the PMCA assay led to an optimized protocol capable of ~3 log10 amplification after 32 cycles (two 16 hour rounds). When commercially purchased normal hamster...
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1998
Rankin, Robert, Tikhonchuk, V. T.
We describe nonlinear resonance absorption of compressional Alfven waves in a model magnetosphere. It is shown that the ponderomotive force of excited standing shear Alfven waves can lead to nonlinear saturation and spatial structuring of field line resonances and that in low-beta plasmas...