Charge-Exchange Plasma Contamination on SMART-1: First Measurements and Model Verification

Foing, B. H.; González, J. J.; Noci, G.; Schmidt, W.; Darnon, Franck

doi:10.2514/6.2004-3437

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…It can be seen that the plasma density deduced from the current potential relation is much higher than the expected natural plasma environment. Because the LP is not located in the main thruster plume, the plasma that dominates the current collected by the probe is the plasma generated by charge exchange collisions between the accelerated ions at the exit of the thruster and the slow neutrals cf., e.g., [4]. These secondary ions have a low energy and are accelerated away from the core of the plume.…”

Section: Measurementsmentioning

confidence: 97%

A Simple Model of the Effect of Solar Array Orientation on SMART-1 Floating Potential

Hilgers

Thiébault

Estublier

et al. 2006

IEEE Trans. Plasma Sci.

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Results from SMART-1 plasma measurements indicate that the spacecraft is, in general, floating 10 to 30 V negative with respect to the ambient plasma and that the floating potential varies with the orientation of the solar array with respect to the direction of the thrust. It is shown in this paper that a wake created behind the solar panel by the plasma generated in the plume by charge exchange and expanding toward the spacecraft may explain such a potential variation.Index Terms-Space vehicle power system, space vehicle propulsion.

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Section: Measurementsmentioning

confidence: 97%

A Simple Model of the Effect of Solar Array Orientation on SMART-1 Floating Potential

Hilgers

Thiébault

Estublier

et al. 2006

IEEE Trans. Plasma Sci.

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“… PIC (Plume Impingement Contamination) -  MEDET (Materials Exposure and Degradation ExperimenT) (Dinguirard et al 2001;Inguimbert et al 2008, Tighe et al 2009 (Mckeown 1998, McKeown et al, 1973  MSX - (Wood et al 1997, Wood et al 1998, Wood et al 2000 Tajmar et al 2004)  LISA Pathfinder - (Paita et al 2012, Capacci et al 2007 QCM's suppliers, characteristics and performances in seven satellite mission of JAXA (SDS-4), NASA (DeepSpace1, OGO-6, MSX) and collaborations with ESA (SMART 1, LISA Pathfinder and MEDET) are summarized in Table 8. In particular, MSX experiment will be discussed in detail.…”

Section: Qcms For Space Applications 31 Historical View Missions Anmentioning

confidence: 99%

A review of quartz crystal microbalances for space applications

Dirri

Palomba

Longobardo

et al. 2019

Sensors and Actuators A: Physical

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The aim of this work is a technical review about Quartz Crystal Microbalance (QCM) sensors used in space missions, i.e. Space Shuttle flights, i.e. NASA Space Transportation System (NASA STS) and satellite missions, that aimed at monitoring the contamination generated by outgassing processes of materials onboard satellites and sensitive payloads. The contamination processes are critical for scientific instrumentation (e.g. optics, telescopes, detectors) because scientific measurements and performances can be jeopardized or worsened by uncontrolled contamination. This issue has been addressed by the space agencies, e.g. NASA, ESA and JAXA that have implemented many different studies to monitor the material outgassing and degradation in space environment. During the past years, the QCM sensors have become the baseline solution for measuring material outgassing and characterizing the on-orbit contamination environment. This work summarizes the main QCM applications in Space and their findings, providing an overview of the sensors' performances in terms of stability, power, data rate, measurement accuracy and resolution. Different QCM technologies will be compared highlighting the advantages of their use for the next space missions and instrumentations that require an accurate monitoring of contamination environment. In particular, due to more severe contamination requirements for next payloads and instrumentations, QCM sensors would be useful to estimate the cleanliness degree by evaluating the induced contamination and degradation on sensitive instrumentations.

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“…A Langmuir probe located adjacent to the RPA on SMART-1 also provided measurements of several plasma properties at this same location. The measured values [6], [13] are compared with the corresponding simulation values in Table II. The ion density indicated by the Langmuir probe is about a factor of 2 higher than the measured electron density.…”

Section: Charge-exchange Ion Energy Distributionmentioning

confidence: 99%

“…A description of SMART-1, the Hall thrusters, and the plasma plume measurement instrumentation are provided by Tajmar et al [6]. The thrusters employed are French PPS-1350 models that are largely based on Russian SPT-100 technology.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Hall Thruster Plasma Plumes in Space

Boyd

2006

IEEE Trans. Plasma Sci.

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Hall thrusters are an important form of electric propulsion that are being developed and implemented to replace chemical systems for many on-orbit propulsion tasks on communications and exploration spacecraft. A concern in the use of these devices is the possible damage their plasma plumes may cause to the host spacecraft. Computer models of Hall thruster plumes play an important role in integration of these devices onto spacecraft as the space environment is not easily reproduced in ground testing facilities. In this paper, an advanced hybrid particle-fluid model is applied to model the plumes of the Hall thrusters used on the Russian Express and European SMART-1 spacecraft. The results from the model are compared directly with measurements of ion current density and ion energy distributions taken in space by these spacecraft.

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Charge-Exchange Plasma Contamination on SMART-1: First Measurements and Model Verification

Cited by 8 publications

References 12 publications

A Simple Model of the Effect of Solar Array Orientation on SMART-1 Floating Potential

A Simple Model of the Effect of Solar Array Orientation on SMART-1 Floating Potential

A review of quartz crystal microbalances for space applications

Numerical Simulation of Hall Thruster Plasma Plumes in Space

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