Characterization of Vacuum Facility Background Gas Through Simulation and Considerations for Electric Propulsion Ground Testing

In the development of our Z-pinch plasma EUV source, xenon (Xe) is used for the background gas discharges, and a solid tin (Sn) rod is used as target material due to its potential of high convention efficiency (CE) from input electric energy to EUV radiation [1, 2]. The Z-pinch plasma was driven by pulsed current with amplitude of 30 kA and pulse duration of 110 ns. Pinhole imaging, EUV spectrograph and in-band EUV energy monitor were used to characterize the EUV emission from the Z-pinch discharge. The experimental analyses have demonstrated the CE was as high as 3% [3].

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Characterization of Microbial Contamination in Pretreated Urine Collected from the ISS Urine Processing Assembly during Ground Testing

10.4271/2009-01-2421 ◽

2009 ◽

Cited By ~ 2

Author(s):

Michele Birmele ◽

LaShelle McCoy ◽

Monsi Roman ◽

Michael S. Roberts

Keyword(s):

Microbial Contamination ◽

Ground Testing ◽

Urine Processing

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High-Frequency Characterization of EMI/EMC Ground Test Facility for the Measurements of Electric Propulsion Thruster Emissions

12th European Conference on Antennas and Propagation (EuCAP 2018) ◽

10.1049/cp.2018.1048 ◽

2018 ◽

Author(s):

M. Albani ◽

F. Puggelli ◽

A. Toccafondi ◽

G. Meniconi ◽

F. Scortecci

Keyword(s):

High Frequency ◽

Electric Propulsion ◽

Test Facility ◽

Ground Test

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Characterization of EMI/EMC Ground Test Facility for Electric Propulsion Thrusters By Means of Iterative Physical Optics

2019 ESA Workshop on Aerospace EMC (Aerospace EMC) ◽

10.23919/aeroemc.2019.8788931 ◽

2019 ◽

Author(s):

Matteo Albani ◽

Federico Puggelli ◽

Alberto Toccafondi ◽

Gianfranco Meniconi ◽

Fabrizio Scortecci

Keyword(s):

Electric Propulsion ◽

Test Facility ◽

Physical Optics ◽

Ground Test

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Characterization of a Capillary Flow Controller for Electric Propulsion

Journal of Propulsion and Power ◽

10.2514/1.b37726 ◽

2020 ◽

Vol 36 (4) ◽

pp. 586-592

Author(s):

Kiyoshi Kinefuchi ◽

Shinatora Cho ◽

Ryudo Tsukizaki

Keyword(s):

Electric Propulsion ◽

Capillary Flow ◽

Flow Controller

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Emission and Laser-Induced Fluorescence Spectroscopy of Laser-Ablated Titanium Plume

10.1115/imece1999-1080 ◽

1999 ◽

Author(s):

Schubert S. Chu ◽

Costas P. Grigoropoulos

Keyword(s):

Time Of Flight ◽

Laser Induced Fluorescence ◽

Spectroscopic Techniques ◽

Wide Range ◽

Optical Time ◽

Background Gas ◽

Spectrally Resolved ◽

Deposited Film

Abstract Pulsed laser deposition (PLD) of thin films has evolved into a well-recognized technique for a wide range of materials and in a variety of devices. There is great interest in the energy characterization of the ablated plume because this is a key parameter in determining the quality of the deposited film. Spectroscopic techniques, such as optical time-of-flight (TOF,) emission spectroscopy, and laser-induced-fluorescence (LIF) are excellent methods for this purpose since they offer temporal and spatial resolution as well as the capability of distinguishing different species. The effects of laser fluence and background gas pressure on the kinetic energies of the ablated species were found by the optical time-of flight technique and by emission imaging. Furthermore, laser-induced-fluorescence was employed for spectrally resolved imaging. The results provide additional data on the kinetic energy and the distribution of neutral titanium. The axial velocity of neutral titanium was found to be as high as 2 × 104 m/s. The distribution of species within the plume was also determined.

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