RT info:eu-repo/semantics/article
T1 Z-Pinch Interferometry Analysis With the Fourier-Based TNT Code
A1 Valdivia, Maria Pia
A1 Izquierdo, Luisa
A1 Veloso, Felipe
A1 Truong, Ann
A1 Hu, Hanyu
A1 Dilworth, Noah
A1 Bott-Suzuki, Simon C.
A1 Bouffetier, Victorien
A1 Pérez Callejo, Gabriel
K1 Física
K1 Plasmas
K1 Interferometry
K1 Codes
K1 Wire
K1 Electrons
K1 Electric shock
K1 Accuracy
AB 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-driven Z -pinch configurations to expand its capabilities beyond Talbot X-ray interferometry in the high-intensity laser environment. TNT enabled accurate electron density characterization of magnetically driven plasma flows and shocks through phase-retrieval methods that did not require data modification or masking. TNT demonstrated enhanced resolution, detecting below 4% fringe shift, which corresponds to 8.7×1e15cm−2 within 28μm, 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 (∼28μm versus ∼210μm) when resolving plasma ablation features. TNT demonstrated higher sensitivity when probing sharp electron density gradients in supersonic shocks. A maximum electron areal density of 4.1×1e17cm−2 was measured in the shocked plasma region, and a minimum electron density detection of ∼ 1.0×1e15cm−2 was achieved. When probing colliding plasma flows, the calculations of the effective adiabatic index and the associated errors were improved from γ∗=2.6±1.6 –1.4±0.2 with TNT postprocessing, contributing valuable data for the interpretation of radiative transport. Additional applications of TNT in the characterization of pulsed-power plasmas and beyond are discussed.
PB Institute of Electrical ad Electronics Engineers
SN 0093-3813
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/69349
UL https://uvadoc.uva.es/handle/10324/69349
LA spa
NO IEEE Transactions on Plasma Science, vol. 52, n. 6.
NO Producción Científica
DS UVaDOC
RD 24-nov-2024