scholarly journals Generation and propagation of ion cyclotron waves in nonuniform magnetic field: Application to the corona and solar wind

2014 ◽  
Vol 119 (11) ◽  
pp. 8750-8763 ◽  
Author(s):  
N. Omidi ◽  
C. T. Russell ◽  
L. K. Jian ◽  
P. Isenberg ◽  
H. Y. Wei
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Field Application ◽  
Nonuniform Magnetic Field ◽  
Ion Cyclotron Waves ◽  
Ion Cyclotron ◽  
Magnetic Field Application

Electrostatic ion-cyclotron waves in a nonuniform magnetic field

1985 ◽  
Vol 28 (10) ◽  
pp. 3066 ◽  
Author(s):  
S. L. Cartier ◽  
N. D’Angelo ◽  
R. L. Merlino
Keyword(s):  
Magnetic Field ◽  
Nonuniform Magnetic Field ◽  
Ion Cyclotron Waves ◽  
Ion Cyclotron

scholarly journals Magnetic Field Application to Increase Yield of Microalgal Biomass in Biofuel Production

2020 ◽  
Author(s):  
Lucielen Oliveira Santos ◽  
Pedro Garcia Pereira Silva ◽  
Sharlene Silva Costa ◽  
Taiele Blumberg Machado
Keyword(s):  
Magnetic Field ◽  
Renewable Energy Sources ◽  
Biomass Concentration ◽  
Field Application ◽  
Raw Material ◽  
Biofuel Production ◽  
Microalgal Biomass ◽  
Microalgal Cultivation ◽  
High Yields ◽  
Magnetic Field Application

Use of fuels from non-renewable sources has currently been considered unsustainable due to the exhaustion of supplies and environmental impacts caused by them. Climate change has concerned and triggered environmental policies that favor research on clean and renewable energy sources. Thus, production of third generation biofuels is a promising path in the biofuel industry. To yield this type of biofuels, microalgae should be highlighted because this raw material contains important biomolecules, such as carbohydrates and lipids. Technological approaches have been developed to improve microalgal cultivation under ecological conditions, such as light intensity, temperature, pH and concentrations of micro and macronutrients. Thus, magnetic field application to microalgal cultivation has become a viable alternative to obtain high yields of biomass concentration and accumulation of carbohydrates and lipids.

MHD and Ion Kinetic Waves in Field-aligned Flows Observed by Parker Solar Probe

2021 ◽  
Vol 922 (2) ◽  
pp. 188
Author(s):  
L.-L. Zhao ◽  
G. P. Zank ◽  
J. S. He ◽  
D. Telloni ◽  
L. Adhikari ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Whistler Wave ◽  
Spectral Energy ◽  
Small Scale ◽  
The Sun ◽  
Fast Mode ◽  
Magnetic Fluctuations ◽  
Background Magnetic Field ◽  
Ion Cyclotron

Abstract Parker Solar Probe (PSP) observed predominately Alfvénic fluctuations in the solar wind near the Sun where the magnetic field tends to be radially aligned. In this paper, two magnetic-field-aligned solar wind flow intervals during PSP’s first two orbits are analyzed. Observations of these intervals indicate strong signatures of parallel/antiparallel-propagating waves. We utilize multiple analysis techniques to extract the properties of the observed waves in both magnetohydrodynamic (MHD) and kinetic scales. At the MHD scale, outward-propagating Alfvén waves dominate both intervals, and outward-propagating fast magnetosonic waves present the second-largest contribution in the spectral energy density. At kinetic scales, we identify the circularly polarized plasma waves propagating near the proton gyrofrequency in both intervals. However, the sense of magnetic polarization in the spacecraft frame is observed to be opposite in the two intervals, although they both possess a sunward background magnetic field. The ion-scale plasma wave observed in the first interval can be either an inward-propagating ion cyclotron wave (ICW) or an outward-propagating fast-mode/whistler wave in the plasma frame, while in the second interval it can be explained as an outward ICW or inward fast-mode/whistler wave. The identification of the exact kinetic wave mode is more difficult to confirm owing to the limited plasma data resolution. The presence of ion-scale waves near the Sun suggests that ion cyclotron resonance may be one of the ubiquitous kinetic physical processes associated with small-scale magnetic fluctuations and kinetic instabilities in the inner heliosphere.

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