Browsing by Author "Bouffetier, Victorien"

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    $Z$-Pinch Interferometry Analysis With the Fourier-Based TNT Code
    (2024) Valdivia, Maria Pia; Pérez-Callejo, Gabriel; Izquierdo Gonzalez, Luisa Fernanda; Veloso, Felipe; Truong, Ann; Hu, Hanyu; Dilworth, Noah; Bott-Suzuki, Simon C.; Bouffetier, Victorien
    We present the analysis of interferometry diagnostics with the user-friendly Talbot Numerical Tool (TNT), a Fourier-based postprocessing code that enables real-time assessment of plasma systems. TNT performance was explored with visible and infrared interferometry in pulsed-power-drivenZ-pinch configurations to expand its capabilities beyond Talbot X-ray interferometry in the high-intensity laser environment. TNT enabled accurate electron density characterization ofmagnetically driven plasma flows and shocks through phaseretrieval methods that did not require data modification or masking. TNT demonstrated enhanced resolution, detecting below 4% fringe shift, which corresponds to 8.7 × 1015 cm−2 within 28 µm, approaching the laser probing system limit.TNT was tested against a well-known interferometry analysis software, delivering an average resolving power nearly ten times better (∼28 µm versus ∼210 µm) when resolving plasmaablation features. TNT demonstrated higher sensitivity when probing sharp electron density gradients in supersonic shocks. A maximum electron areal density of 4.1 × 1017 cm−2 was measured in the shocked plasma region, and a minimum electron density detection of ∼1.0 × 1015 cm−2 was achieved. When probing colliding plasma flows, the calculations of the effective