Toward streaked collective Thomson scattering measurements on an extreme ultraviolet plasma light source

M Simeni Simeni; A S Davies; A Diallo

doi:10.1063/5.0131598

Toward streaked collective Thomson scattering measurements on an extreme ultraviolet plasma light source

Rev Sci Instrum. 2023 Apr 1;94(4):043501. doi: 10.1063/5.0131598.

Authors

M Simeni Simeni^{1

2}, A S Davies³, A Diallo¹

Affiliations

¹ Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
² Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA.
³ Spectra Physics/MKS, Milpitas, California 95035, USA.

PMID: 38081252
DOI: 10.1063/5.0131598

Abstract

We show through forward modeling calculations that streaked collective Thomson scattering measurements are feasible on laser-produced tin plasmas generated under conditions relevant for extreme ultraviolet lithography. Using a 532 nm probe laser beam, the feasibility of simultaneous measurements of electron plasma wave (EPW) and ion acoustic wave (IAW) spectra is investigated. Absolute photon counts for laser scattering off both waves are calculated. Probe laser electron heating and bremsstrahlung background radiation effects are accounted for. While a large spatiotemporal region can be successfully probed based on the IAW feature, only one measurement location can be accessed through the EPW as a result of the low signal to noise ratio. A portable/traveling tabletop system is proposed.