scholarly journals Multiple ion species fluid modeling of sprite halos and the role of electron detachment of O−in their dynamics

2012 ◽  
Vol 117 (A3) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ningyu Liu
Keyword(s):  
Electron Detachment ◽  
Fluid Modeling ◽  
Ion Species ◽  
Sprite Halos

scholarly journals On the Impacts of Ions of Ionospheric Origin and Their Composition on Magnetospheric EMIC Waves

2021 ◽  
Vol 8 ◽  
Author(s):  
Justin H. Lee ◽  
Lauren W. Blum ◽  
Lunjin Chen
Keyword(s):  
Wave Generation ◽  
Magnetospheric Plasma ◽  
Large Numbers ◽  
Emic Wave ◽  
Direct Measurements ◽  
Ion Cyclotron ◽  
Earth's Magnetosphere ◽  
Ion Species ◽  
Emic Waves

Large numbers of theory and observation studies have been conducted on electromagnetic ion cyclotron (EMIC) waves occurring in Earth’s magnetosphere. Numerous studies have shown that accurately specifying the ions of ionospheric origin and their composition can greatly improve understanding of magnetospheric EMIC waves, specifically their generation, their properties, and their effects on the magnetospheric plasma populations. With the launch and operations of multiple recent missions carrying plasma instrumentation capable of acquiring direct measurements of multiple ion species, we use this opportunity to review recent magnetospheric EMIC wave efforts utilizing these new assets, with particular focus on the role of ions of ionospheric origin in wave generation, propagation, and interaction with particles. The review of progress leads us to a discussion of the unresolved questions to be investigated using future modeling capabilities or when new missions or instrumentation capabilities are developed.

scholarly journals Collisionality dependence and ion species effects on heat transport in He and H plasma, and the role of ion scale turbulence in LHD

2017 ◽  
Vol 57 (11) ◽  
pp. 116005 ◽  
Author(s):  
K. Tanaka ◽  
K. Nagaoka ◽  
S. Murakami ◽  
H. Takahashi ◽  
M. Osakabe ◽  
...  
Keyword(s):  
Heat Transport ◽  
Species Effects ◽  
Scale Turbulence ◽  
Ion Species

Role of the free metal ion species in soluble nickel removal by activated sludge

1984 ◽  
Vol 18 (11) ◽  
pp. 883-886 ◽  
Author(s):  
Jeppe S. Nielsen ◽  
Steve E. Hrudey ◽  
Frederick F. Cantwell
Keyword(s):  
Activated Sludge ◽  
Metal Ion ◽  
Nickel Removal ◽  
Ion Species ◽  
Free Metal ◽  
Free Metal Ion

The Competition between Ion Beam Induced Epitaxial Crystallization and Amorphization in Silicon: The Role of the Divacancy

1986 ◽  
Vol 74 ◽  
Author(s):  
J. Linnros ◽  
R. G. Elliman ◽  
W. L. Brown
Keyword(s):  
Activation Energy ◽  
Dose Rate ◽  
Dynamic Equilibrium ◽  
Ion Beam ◽  
Amorphous Layer ◽  
Linear Displacement ◽  
Epitaxial Crystallization ◽  
Critical Dose ◽  
Ion Species

AbstractThe transition from ion induced epitaxial crystallization to planar amorphization of a preexisting amorphous layer in silicon has been investigated. The conditions for dynamic equilibrium at the transition were determined for different ion species as a function of dose rate and temperature. The critical dose rate for equilibrium varies exponentially with 1/T, exhibiting an activation energy of ∼1.2 eV. Furthermore, for different ions, the critical dose rate is inversely proportional to the square of the linear displacement density created by individual ions. This second order defect production process and the activation energy, which is characteristic of divacancy dissociation, suggest that the accumulation of divacancies at the amorphous/crystalline interface controls the balance between crystallization and amorphization.

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