scholarly journals The RPW Time Domain Sampler (TDS) on Solar Orbiter: In-flight performance and first data

2020 ◽  
Author(s):  
Jan Soucek ◽  
Ludek Uhlir ◽  
Radek Lan ◽  
David Pisa ◽  
Ivana Kolmasova ◽  
...  
Keyword(s):  
Time Domain ◽  
Sampling Rate ◽  
Plasma Waves ◽  
Scientific Data ◽  
Interplanetary Shocks ◽  
Langmuir Waves ◽  
Actual Performance ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Solar Bursts

<p>The Radio and Plasma Wave instrument (RPW) for Solar Orbiter includes a Time Domain Sampler sub-unit (TDS) designed to capture electromagnetic waveform measurements of high-frequency plasma waves and antenna voltage spikes associated with dust impacts. TDS will digitize three components of the electric field and one magnetic component at 524 kHz sampling rate and scan the obtained signal for plasma waves and dust impact signatures. The main science target of TDS are Langmuir waves observed in the solar wind in association with Type II and Type III solar bursts, interplanetary shocks, magnetic holes, and other phenomena. In this poster, we present the scientific data products provided by the TDS instrument and discuss the first data obtained during the commissioning phase. The first data will be used to evaluate the actual performance of the RPW TDS instrument.</p>

Coupling between High-Frequency Plasma Waves in Laser-Plasma Interactions

1995 ◽  
Vol 74 (12) ◽  
pp. 2236-2239 ◽  
Author(s):  
M. J. Everett ◽  
A. Lal ◽  
C. E. Clayton ◽  
W. B. Mori ◽  
T. W. Johnston ◽  
...  
Keyword(s):  
Laser Plasma ◽  
High Frequency ◽  
Plasma Waves ◽  
Plasma Interactions ◽  
Laser Plasma Interactions ◽  
High Frequency Plasma ◽  
Frequency Plasma

Nonlinear propagation of high-frequency plasma waves in a magnetized plasma

1977 ◽  
Vol 18 (2) ◽  
pp. 249-256 ◽  
Author(s):  
P. K. Shukla
Keyword(s):  
High Frequency ◽  
Nonlinear Effects ◽  
Plasma Waves ◽  
Electron Plasma ◽  
Magnetized Plasma ◽  
Nonlinear Propagation ◽  
Arbitrary Angle ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Density Perturbations

We study nonlinear effects associated with large amplitude electron plasma waves propagating at an arbitrary angle to the external magnetic field. It is shown that the nonlinear coupling of high-frequency plasma waves with static density perturbations leads to a convective instability. The growth length of the latter is obtained. The evolution of the wave electric field is also investigated.

scholarly journals Solar Orbiter’s first Venus Flyby: MAG observations of structures and waves associated with the induced Venusian magnetosphere

2021 ◽  
Author(s):  
Martin Volwerk ◽  
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
High Frequency ◽  
Cyclotron Frequency ◽  
Plasma Waves ◽  
Bow Shock ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Mirror Mode ◽  
Proton Cyclotron

<p>The induced magnetosphere of Venus is created by the interaction of the solar wind and embedded interplanetary magnetic field with the exosphere and ionosphere of Venus. Solar Orbiter entered Venus’s magnetotail far downstream, > 70 Venus radii, of the planet and exited the magnetosphere over the north pole. This offered a unique view of the system over distances that were only flown through once by three other missions before, Mariner 10, Galileo and Bepi-Colombo. The large-scale structure and activity of the induced magnetosphere is studied as well as the high-frequency plasma waves both in the magnetosphere and in a limited region upstream of the planet where interaction with Venus’s exosphere is expected.  It is shown that Venus’s magnetotail is very active during the Solar Orbiter flyby. Structures such as flux ropes, and reconnection sites are encountered as well as a strongly overdraping of the magnetic field downstream of the bow shock and planet. High-frequency plasma waves (up to 6 times the local proton cyclotron frequency) are observed in the magnetotail, which are identified as Doppler-shifted proton cyclotron waves, whereas in the upstream solar wind these waves appear just below the proton cyclotron frequency (as expected) but are very patchy. The bow shock is quasi perpendicular, however, expected mirror mode activity is not found directly behind it; instead there is strong cyclotron wave power. This is most-likely caused by the relatively low plasma-beta  behind the bow shock. Much further downstream in the magnetosheath mirror mode of magnetic hole structures are identified. This presentation will take place after the second Venus flyby by Solar Orbiter and BepiColombo and Solar Orbiter on 9 and 10 August, respectively.</p>

scholarly journals Wind/WAVES observations of high-frequency plasma waves in solar wind reconnection exhausts

2007 ◽  
Vol 112 (A1) ◽  
pp. n/a-n/a ◽  
Author(s):  
K. E. J. Huttunen ◽  
S. D. Bale ◽  
T. D. Phan ◽  
M. Davis ◽  
J. T. Gosling
Keyword(s):  
Solar Wind ◽  
High Frequency ◽  
Wind Waves ◽  
Plasma Waves ◽  
High Frequency Plasma ◽  
Frequency Plasma

scholarly journals The Radio and Plasma Waves (RPW) Instrument on Solar Orbiter : Capabilities, Performance and First results.

2020 ◽  
Author(s):  
Milan Maksimovic ◽  
Jan Souček ◽  
Stuart D. Bale ◽  
Xavier Bonnin ◽  
Thomas Chust ◽  
...  
Keyword(s):  
Electric Fields ◽  
Solar Radio ◽  
Plasma Waves ◽  
Interplanetary Shocks ◽  
Langmuir Waves ◽  
Radio Emissions ◽  
First Results ◽  
Solar Radio Emissions ◽  
Orbiter Mission

<p>We will review the instrumental capabilities of the Radio and Plasma Waves (RPW) Instrument on Solar Orbiter which at the time of writing this abstract is planned for a launch on February 5<sup>th</sup> 2020. This instrument is designed to measure in-situ magnetic and electric fields and waves from 'DC' to a few hundreds of kHz. RPW will also observe solar radio emissions up to 16 MHz. The RPW instrument is of primary importance to the Solar Orbiter mission and science requirements, since it is essential to answer three of the four mission overarching science objectives. In addition, RPW will exchange on-board data with the other in-situ instruments, in order to process algorithms for interplanetary shocks and type III Langmuir waves detections. If everything goes well after the launch, we will hopefully be able to present the first RPW data and results gathered during the commissioning.</p>

scholarly journals The Solar Orbiter Radio and Plasma Waves (RPW) instrument

2020 ◽  
Vol 642 ◽  
pp. A12 ◽  
Author(s):  
M. Maksimovic ◽  
S. D. Bale ◽  
T. Chust ◽  
Y. Khotyaintsev ◽  
V. Krasnoselskikh ◽  
...  
Keyword(s):  
Electric Fields ◽  
Solar Radio ◽  
Plasma Waves ◽  
The Other ◽  
Interplanetary Shocks ◽  
Langmuir Waves ◽  
Radio Emissions ◽  
Solar Radio Emissions ◽  
Orbiter Mission

The Radio and Plasma Waves (RPW) instrument on the ESA Solar Orbiter mission is described in this paper. This instrument is designed to measure in-situ magnetic and electric fields and waves from the continuous to a few hundreds of kHz. RPW will also observe solar radio emissions up to 16 MHz. The RPW instrument is of primary importance to the Solar Orbiter mission and science requirements since it is essential to answer three of the four mission overarching science objectives. In addition RPW will exchange on-board data with the other in-situ instruments in order to process algorithms for interplanetary shocks and type III langmuir waves detections.

Method of tribodiagnostics of d-30KU engines/KP with the use of a microwave plasma complex: results of metrological examination and analysis of the accuracy

2020 ◽  
pp. 22-29
Author(s):  
A. Bogoyavlenskiy ◽  
A. Bokov
Keyword(s):  
Gas Turbine ◽  
Microwave Plasma ◽  
Technical Condition ◽  
The State ◽  
Turbine Engines ◽  
Metrological Examination ◽  
Gas Turbine Engines ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Primary Standards

The article contains the results of the metrological examination and research of the accuracy indicators of a method for diagnosing aircraft gas turbine engines of the D30KU/KP family using an ultra-high-frequency plasma complex. The results of metrological examination of a complete set of regulatory documents related to the diagnostic methodology, and an analysis of the state of metrological support are provided as well. During the metrological examination, the traceability of a measuring instrument (diagnostics) – an ultrahigh-frequency plasma complex – is evaluated based on the scintillation analyzer SAM-DT-01–2. To achieve that, local verification schemes from the state primary standards of the corresponding types of measurements were built. The implementation of measures to eliminate inconsistencies identified during metrological examination allows to reduce to an acceptable level the metrological risks of adverse situations when carrying out aviation activities in industry and air transportation. In addition, the probability of occurrence of errors of the first and second kind in the technological processes of tribodiagnostics of aviation gas turbine engines is reduced when implementing a method that has passed metrological examination in real practice. At the same time, the error in determining ratings and wear indicators provides acceptable accuracy indicators and sufficient reliability in assessing the technical condition of friction units of the D-30KP/KP2/KU/KU-154 aircraft engines.

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