Development of theory and experimental operational framework for Coherent Thomson Scattering (Final Technical Report)

Technical Report · Fri Nov 04 04:00:00 EDT 2022

DOI:https://doi.org/10.2172/1865912· OSTI ID:1865912

Gerakis, Alexandros ^[1]; Shneider, Mikhail ^[2]

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1. Texas A & M Univ., College Station, TX (United States); Sponsored Research Services, Texas A&M University
2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States). Princeton Collaborative Low Temperature Plasma Research Facility (PCRF)

The research carried out explored and proved the feasibility and operational framework of a new diagnostic technique termed Coherent Thomson Scattering (CTS) for electrons in a low temperature plasma. The work is performed in collaboration with the Princeton Collaborative Research Facility (PCRF) at Princeton Plasma Physics Laboratory. The novel technique builds on an established and demonstrated single shot diagnostic method, called Coherent Rayleigh-Brillouin scattering, which has successfully been applied in neutral flows. The proposed novel four wave mixing diagnostic technique of CTS will allow for higher spatial resolution and lower detectable number densities for the electrons than conventional Thomson scattering. In this project we developed the theoretical framework for Coherent Thomson Scattering as well as the specification of the appropriate operational experimental parameters for successful CTS implementation in e.g. a low temperature plasma. Additionally, the mode of operation and the detection limits for a practical CTS experimental demonstration were explored. Ultimately, successful experimental demonstration of CTS can be seen as transformative in a multitude of plasma physics areas, since it will allow for detailed, non-perturbative measurements of electron density and temperature, previously unattainable by other measurement techniques. This project was the first successful step towards this direction.

• Research Organization: Texas A & M Univ., College Station, TX (United States); Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States). Princeton Collaborative Low Temperature Plasma Research Facility (PCRF)
• Sponsoring Organization: USDOE Office of Science (SC), Fusion Energy Sciences (FES)
• DOE Contract Number: SC0021183; AC02-09CH11466
• OSTI ID: 1865912
• Report Number(s): DOE-TAMU-21183
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY