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Measurements of the D-region plasma using active falling plasms probes

Baumann, Carsten and Asmus, H. and Schumacher, J. and Staszak, T. and Karow, N. and Fencik, A. and Schünemann, P. and Strelnikov, B. (2013) Measurements of the D-region plasma using active falling plasms probes. In: 21st ESA Symposium on European Rocket and Balloon Programmes and related Research, Specia. ESA. 21st ESA Symposium on European Rocket and Balloon Programmes and related Research, 9.-13. Juni 2013, Thun, Schweiz.

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Abstract

The MEDUSA experiment, as a part of the REXUS/BEXUS project, develops a new in-situ technique probing the lower ionosphere plasma by two daughter payloads. These identical daughter payloads contain sensitive structures which are exposed to the atmosphere. This structure consists of a grid, which surrounds an ion collector that is connected to a electrometer. The collector has a negative potential, the measured current at an electrometer is proportional to the ion density measurements. The grid is on plasma potential and retards the fast ions. At the same time a debye sheath evolves around the grid. The grid and the debye sheath builds a capacitor which is part of a oscillating circuit. Measuring the frequency of this circuit provides a relative measure of the electron density. An acceleration sensor inside each payload can be used to derive neutral gas density profiles from the Navier-Stokes equation. These neutral density profiles can be used to investigate possible correlations with the plasma densites. A GPS receiver on each subpayload provides in-situ horizontal information of all three physical quantities (electron, ion and neutral density) that hasn't been available in this scientific field before. During the REXUS 15/16 campaign a rocket will bring the two probes up to 90 km, which are then ejected from the main payload. In the following, the daughter payloads measure the electron and ion density. The data is stored on the daughter payloads and is sent also to a ground station if a recovery of the probe is not possible. The scientific scope of MEDUSA is measuring small scale fluctuations in the plasma density of the D-region. Enabling investigations on the physics of the atmospheric phenomenon polar mesospheric winter echos (PMWE), which are radar echos in the range of 55-80 km. The measurement is supported by ground based instruments and model studies at winter polar latitudes.

Item URL in elib:https://elib.dlr.de/104481/
Document Type:Conference or Workshop Item (Speech)
Title:Measurements of the D-region plasma using active falling plasms probes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Baumann, CarstenDLR, IPAUNSPECIFIED
Asmus, H.Institut für Atmosphärenphysik, KühlungsbornUNSPECIFIED
Schumacher, J.Fakultät für Elektrotechnik, Universität RostockUNSPECIFIED
Staszak, T.Fakultät für Maschinenbau, Universität Rostock,UNSPECIFIED
Karow, N.Fakultät für Maschinenbau, Universität RostockUNSPECIFIED
Fencik, A.Fakultät für Maschinenbau, Universität RostockUNSPECIFIED
Schünemann, P.Fakultät für Maschinenbau, Universität RostockUNSPECIFIED
Strelnikov, B.Leibniz-Institute of Atmospheric Physics, KühlungsbornUNSPECIFIED
Date:November 2013
Journal or Publication Title:21st ESA Symposium on European Rocket and Balloon Programmes and related Research
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Specia
Publisher:ESA
Status:Published
Keywords:Mesosphere, Turbulence, Ionosphere
Event Title:21st ESA Symposium on European Rocket and Balloon Programmes and related Research
Event Location:Thun, Schweiz
Event Type:international Conference
Event Dates:9.-13. Juni 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Rexus/Bexus 2012-2016 (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Baumann, Carsten
Deposited On:08 Jun 2016 15:31
Last Modified:31 Jul 2019 20:01

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