scholarly journals The solar wind plasma density control of night-time auroral particle precipitation

2004 ◽  
Vol 22 (3) ◽  
pp. 1047-1052 ◽  
Author(s):  
V. G. Vorobjev ◽  
B. V. Rezhenov ◽  
O. I. Yagodkina
Keyword(s):  
Solar Wind ◽  
Plasma Density ◽  
Plasma Sheet ◽  
Solar Wind Plasma ◽  
Ion Flux ◽  
Night Time ◽  
Particle Precipitation ◽  
Ion Energy ◽  
Flux Enhancement ◽  
Density Control

Abstract. DMSP F6 and F7 spacecraft observations of the average electron and ion energy, and energy fluxes in different night-time precipitation regions for the whole of 1986 were used to examine the precipitation features associated with solar wind density changes. It was found that during magnetic quietness |AL|<100nT), the enhancement of average ion fluxes was observed at least two times, along with the solar wind plasma density increase from 2 to 24cm–3. More pronounced was the ion flux enhancement that occurred in the b2i–b4s and b4s–b5 regions, which are approximately corresponding to the statistical auroral oval and map to the magnetospheric plasma sheet tailward of the isotropy boundary. The average ion energy decrease of about 2–4kev was registered simultaneously with this ion flux enhancement. The results verify the occurrence of effective penetration of the solar wind plasma into the magnetospheric tail plasma sheet. Key words. Ionosphere (auroral ionosphere, particle precipitation) – Magnetospheric physics (solar windmagnetosphere interaction)

scholarly journals Plasma Process Modeling for Integrated Circuits Manufacturing

VLSI Design ◽  
1998 ◽  
Vol 6 (1-4) ◽  
pp. 409-412
Author(s):  
M. Meyyappan ◽  
T. R. Govindan
Keyword(s):  
Integrated Circuits ◽  
Plasma Density ◽  
Process Modeling ◽  
Ion Flux ◽  
Two Dimensional ◽  
Plasma Process ◽  
Reactor Model ◽  
Ion Energy

A reactor model for plasma-based deposition and etching is presented. Two-dimensional results are discussed in terms of plasma density, ion flux, and ion energy. Approaches to develop rapid CAD-type models are discussed.

scholarly journals Dynamic properties of small-scale solar wind plasma fluctuations

2015 ◽  
Vol 373 (2041) ◽  
pp. 20140146 ◽  
Author(s):  
M. O. Riazantseva ◽  
V. P. Budaev ◽  
L. M. Zelenyi ◽  
G. N. Zastenker ◽  
G. P. Pavlos ◽  
...  
Keyword(s):  
Solar Wind ◽  
Turbulent Flow ◽  
Dynamic Properties ◽  
Poisson Model ◽  
Solar Wind Plasma ◽  
Break Point ◽  
Ion Flux ◽  
Statistical Characteristics ◽  
Small Scale ◽  
High Temporal Resolution

The paper presents the latest results of the studies of small-scale fluctuations in a turbulent flow of solar wind (SW) using measurements with extremely high temporal resolution (up to 0.03 s) of the bright monitor of SW (BMSW) plasma spectrometer operating on astrophysical SPECTR-R spacecraft at distances up to 350 000 km from the Earth. The spectra of SW ion flux fluctuations in the range of scales between 0.03 and 100 s are systematically analysed. The difference of slopes in low- and high-frequency parts of spectra and the frequency of the break point between these two characteristic slopes was analysed for different conditions in the SW. The statistical properties of the SW ion flux fluctuations were thoroughly analysed on scales less than 10 s. A high level of intermittency is demonstrated. The extended self-similarity of SW ion flux turbulent flow is constantly observed. The approximation of non-Gaussian probability distribution function of ion flux fluctuations by the Tsallis statistics shows the non-extensive character of SW fluctuations. Statistical characteristics of ion flux fluctuations are compared with the predictions of a log-Poisson model. The log-Poisson parametrization of the structure function scaling has shown that well-defined filament-like plasma structures are, as a rule, observed in the turbulent SW flows.

scholarly journals Moon Mapping project results on Solar Wind ion flux and composition.

2021 ◽  
Author(s):  
Francesco Nozzoli ◽  
Pietro Richelli
Keyword(s):  
Solar Wind ◽  
Ion Flux

scholarly journals A review of the SCOSTEP’s 5-year scientific program VarSITI—Variability of the Sun and Its Terrestrial Impact

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Kazuo Shiokawa ◽  
Katya Georgieva
Keyword(s):  
Solar Wind ◽  
Interplanetary Space ◽  
Solar Wind Plasma ◽  
The Sun ◽  
Scientific Program ◽  
Solar Cycles ◽  
Grand Minimum ◽  
The Earth ◽  
Earth Connection ◽  
Near Future

AbstractThe Sun is a variable active-dynamo star, emitting radiation in all wavelengths and solar-wind plasma to the interplanetary space. The Earth is immersed in this radiation and solar wind, showing various responses in geospace and atmosphere. This Sun–Earth connection variates in time scales from milli-seconds to millennia and beyond. The solar activity, which has a ~11-year periodicity, is gradually declining in recent three solar cycles, suggesting a possibility of a grand minimum in near future. VarSITI—variability of the Sun and its terrestrial impact—was the 5-year program of the scientific committee on solar-terrestrial physics (SCOSTEP) in 2014–2018, focusing on this variability of the Sun and its consequences on the Earth. This paper reviews some background of SCOSTEP and its past programs, achievements of the 5-year VarSITI program, and remaining outstanding questions after VarSITI.

scholarly journals Ulysses solar wind plasma observations at high latitudes

1997 ◽  
Vol 20 (1) ◽  
pp. 15-22 ◽  
Author(s):  
P Riley ◽  
S.J Bame ◽  
B.L Barraclough ◽  
W.C Feldman ◽  
J.T Gosling ◽  
...  
Keyword(s):  
Solar Wind ◽  
Solar Wind Plasma ◽  
High Latitudes
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