Fsdss232 Hot [top] Jun 2026

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All diagnostics are synchronized via a LabVIEW‑based data‑acquisition system. fsdss232 hot

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The FSDSS‑232 (“Fast‑Streaming Discharge‑Sustained Source”) is a newly developed high‑temperature plasma generator designed for materials processing, thin‑film deposition, and plasma‑assisted synthesis. This paper presents a comprehensive thermal and performance study of the FSDSS‑232 operating in its “Hot” regime (electron temperatures 5–10 eV, ion densities up to 2 × 10¹⁸ m⁻³). We describe the source architecture, the diagnostic suite employed (Langmuir probes, optical emission spectroscopy, infrared thermography, and fast‑camera imaging), and the methodology for quantifying heat flux, energy efficiency, and plasma uniformity. Results reveal a peak surface heat flux of 4.2 kW cm⁻² at 150 W input power, with an overall energy conversion efficiency of 38 % from electrical input to plasma kinetic energy. Spatial uniformity across a 100 mm diameter target area is better than ±7 %. We discuss the underlying physical mechanisms governing the hot regime, including sheath dynamics, electron–neutral collisions, and magnetic confinement effects. The paper concludes with recommendations for scaling the FSDSS‑232 to industrial‑relevant power levels and outlines prospective applications in advanced manufacturing. This paper presents a comprehensive thermal and performance

| Diagnostic | Principle | Spatial/Temporal Resolution | |------------|-----------|------------------------------| | | I‑V characteristic analysis for Te, ne, plasma potential. | 1 mm spatial steps, 1 kHz sweep rate. | | Optical Emission Spectroscopy (OES) | Line‑intensity ratios (Ar I 750 nm / Ar II 434 nm) for Te estimation. | 0.5 nm spectral resolution, 10 µs integration. | | Infrared (IR) Thermography | Surface temperature mapping of the target holder. | 640 × 480 pixel, 100 Hz frame rate. | | Fast‑Camera Imaging | Visible plume dynamics, sheath expansion. | 10 µs exposure, 10 kfps. |

The FSDSS232 was also tested under high power operation (20W) at room temperature (23°C). The results are presented below: