Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

Yusuke Egawa; Naoji Yamamoto; Atsushi Yamaguchi; Taichi Morita

doi:10.1063/1.5127788

Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

Yusuke Egawa, Naoji Yamamoto, Atsushi Yamaguchi, Taichi Morita

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

Abstract

A high-sensitivity sensor to measure titanium atom density based on time-resolved cavity ring-down spectroscopy (CRDS) was developed to monitor the wall erosion and predict the lifetime of Hall thrusters. The minimum detection limit for the sensor was dependent on the discharge current oscillation in the Hall thruster. A Volterra engine management system was employed for time-resolved measurements to develop the time-resolved CRDS system, which was synchronized to the discharge current oscillation. The results confirmed that the path-integrated number density of sputtered titanium atoms was synchronized with the discharge current oscillation. The minimum detection limit was decreased by ∼30% from 2 × 1012 to 6 × 1011 m-2.

Original language	English
Article number	113105
Journal	Review of Scientific Instruments
Volume	91
Issue number	11
DOIs	https://doi.org/10.1063/1.5127788
Publication status	Published - Nov 1 2020

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.5127788

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@article{cb09de30dbd148f688ce36468369a7b6,

title = "Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters",

abstract = "A high-sensitivity sensor to measure titanium atom density based on time-resolved cavity ring-down spectroscopy (CRDS) was developed to monitor the wall erosion and predict the lifetime of Hall thrusters. The minimum detection limit for the sensor was dependent on the discharge current oscillation in the Hall thruster. A Volterra engine management system was employed for time-resolved measurements to develop the time-resolved CRDS system, which was synchronized to the discharge current oscillation. The results confirmed that the path-integrated number density of sputtered titanium atoms was synchronized with the discharge current oscillation. The minimum detection limit was decreased by ∼30% from 2 × 1012 to 6 × 1011 m-2. ",

author = "Yusuke Egawa and Naoji Yamamoto and Atsushi Yamaguchi and Taichi Morita",

note = "Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. JP18H03815), the Mit-subishi Electric Corporation, and the Japan Aerospace Exploration Agency (JAXA). Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. JP18H03815), the Mitsubishi Electric Corporation, and the Japan Aerospace Exploration Agency (JAXA). Publisher Copyright: {\textcopyright} 2020 Author(s).",

year = "2020",

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doi = "10.1063/1.5127788",

language = "English",

volume = "91",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

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T1 - Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

AU - Egawa, Yusuke

AU - Yamamoto, Naoji

AU - Yamaguchi, Atsushi

AU - Morita, Taichi

N1 - Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. JP18H03815), the Mit-subishi Electric Corporation, and the Japan Aerospace Exploration Agency (JAXA). Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. JP18H03815), the Mitsubishi Electric Corporation, and the Japan Aerospace Exploration Agency (JAXA). Publisher Copyright: © 2020 Author(s).

PY - 2020/11/1

Y1 - 2020/11/1

N2 - A high-sensitivity sensor to measure titanium atom density based on time-resolved cavity ring-down spectroscopy (CRDS) was developed to monitor the wall erosion and predict the lifetime of Hall thrusters. The minimum detection limit for the sensor was dependent on the discharge current oscillation in the Hall thruster. A Volterra engine management system was employed for time-resolved measurements to develop the time-resolved CRDS system, which was synchronized to the discharge current oscillation. The results confirmed that the path-integrated number density of sputtered titanium atoms was synchronized with the discharge current oscillation. The minimum detection limit was decreased by ∼30% from 2 × 1012 to 6 × 1011 m-2.

AB - A high-sensitivity sensor to measure titanium atom density based on time-resolved cavity ring-down spectroscopy (CRDS) was developed to monitor the wall erosion and predict the lifetime of Hall thrusters. The minimum detection limit for the sensor was dependent on the discharge current oscillation in the Hall thruster. A Volterra engine management system was employed for time-resolved measurements to develop the time-resolved CRDS system, which was synchronized to the discharge current oscillation. The results confirmed that the path-integrated number density of sputtered titanium atoms was synchronized with the discharge current oscillation. The minimum detection limit was decreased by ∼30% from 2 × 1012 to 6 × 1011 m-2.

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JF - Review of Scientific Instruments

IS - 11

M1 - 113105

ER -

Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

Abstract

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