scholarly journals Thermomagnetic instability of plasma composition gradients

2020 ◽  
Vol 27 (12) ◽  
pp. 122110
Author(s):  
James D. Sadler ◽  
Hui Li
1998 ◽  
Vol 08 (PR7) ◽  
pp. Pr7-391-Pr7-399 ◽  
Author(s):  
S. Farhat ◽  
C. Findeling ◽  
F. Silva ◽  
K. Hassouni ◽  
A. Gicquel

Nature ◽  
1983 ◽  
Vol 303 (5919) ◽  
pp. 661-662
Author(s):  
Stanley W.H. Cowley

2021 ◽  
Author(s):  
Justin Lee ◽  
Drew Turner ◽  
Sarah Vines ◽  
Robert Allen ◽  
Sergio Toledo-Redondo

<p>Although thorough characterization of magnetospheric ion composition is rare for EMIC wave studies, convective processes that occur more frequently in Earth’s outer magnetosphere have allowed the Magnetospheric Multiscale (MMS) satellites to make direct measurements of the cold and hot plasma composition during EMIC wave activity. We will present an observation and linear wave modeling case study conducted on EMIC waves observed during a perturbed activity period in the outer dusk-side magnetosphere. During the two intervals investigated for the case study, the MMS satellites made direct measurements of cold plasmaspheric plasma in addition to multiple hot ion components at the same time as EMIC wave emissions were observed. Applying the in-situ plasma composition data to wave modeling, we find that wave growth rate is impacted by the complex interactions between the cold as well as the hot ion components and ambient plasma conditions. In addition, we observe that linear wave properties (unstable wave numbers and band structure) can significantly evolve with changes in cold and hot ion composition. Although the modeling showed the presence of dense cold ions can broaden the range of unstable wave numbers, consistent with previous work, the hot heavy ions that were more abundant nearer storm main phase could limit the growth of EMIC waves to smaller wave numbers. In the inner magnetosphere, where higher cold ion density is expected, the ring current heavy ions could also be more intense near storm-time, possibly resulting in conditions that limit the interactions of EMIC waves with trapped radiation belt electrons to multi-MeV energies. Additional investigation when direct measurements of cold and hot plasma composition are available could improve understanding of EMIC waves and their interactions with trapped energetic particles in the inner magnetosphere.</p>


2018 ◽  
Vol 123 (8) ◽  
pp. 6494-6513 ◽  
Author(s):  
M. Felici ◽  
C. S. Arridge ◽  
R. J. Wilson ◽  
A. J. Coates ◽  
M. Thomsen ◽  
...  

1977 ◽  
Vol 232 (1) ◽  
pp. R10-R17 ◽  
Author(s):  
R. G. DeLaney ◽  
S. Lahiri ◽  
R. Hamilton ◽  
P. Fishman

Upon entering into aestivation, Protopterus aethiopicus develops a respiratory acidosis. A slow compensatory increase in plasma bicarbonate suffices only to partially restore arterial pH toward normal. The cessation of water intake from the start of aestivation results in hemoconcentration and marked oliguria. The concentrations of most plasma constituents continue to increase progressively, and the electrolyte ratios change. The increase in urea concentration is disproportionately high for the degree of dehydration and constitutes an increasing fraction of total plasma osmolality. Acid-base and electrolyte balance do not reach a new equilibrium within 1 yr in the cocoon.


Lab on a Chip ◽  
2016 ◽  
Vol 16 (7) ◽  
pp. 1234-1242 ◽  
Author(s):  
Cédric Laval ◽  
Anne Bouchaudy ◽  
Jean-Baptiste Salmon

Fabrication of microscale materials with programmable composition gradients using the coupling of pervaporation and Quake valves.


Sign in / Sign up

Export Citation Format

Share Document