Plasma diagnosis system using multiple-path Thomson scattering
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United States of America Patent
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Oct 20, 2020
Grant Date -
Oct 3, 2019
app pub date -
Jun 17, 2019
filing date -
Jan 8, 2016
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Abstract
Provided is a plasma diagnosis system using multiple-path Thomson scattering, including: a laser which supplies laser pulse; an optical system which is configuring to focus alternately a vertical polarization of the laser pulse and a horizontal polarization of the laser pulse on first and second focal points in a plasma; a collection optic which collects lights scattered from the first and second focal points in plasma; a polychromator which filters the lights collected by the collection optics according to spectral characteristics; and a computer which measures spectral characteristics by using the filtered lights. Thomson scattered light which is contaminated with noise due to stray lights is produced in the first collected scattering while the noise due to stray lights is produced in the second collected scattering.
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