Dataset for Energetic Electron-Induced Dielectric Breakdown and Dust Mobilization: A New Pathway for Lunar Space Weathering manuiscript

These measurements were made to image particles of JSC1AF lofting from a sample bed while under high energy electron irradiation. The video .tiff files were used to visualize particles transversing a continuous wave 532, 40 mW laser diode which was expanded into a planar sheet using a 30 Powell lens and positioned 1 cm above the sample bed. Lofted particles scattered light into a Zelux 1.6 MP monochrome CMOS (Complementary Metal Oxide Semiconductor) camera. Images were acquired at 100 frames per seconds, with an exposure time of 10 ms, using a 98 pixels × 100 pixels region of interest corresponding to a pixel resolution of 0.31 mm per pixel. This configuration provided sufficient temporal and spatial resolution to capture individual ejecta plumes, enabling quantitative analysis of plume morphology and event timing. The video data were processed in Python and flash events were identified by thresholding pixel intensities above the spatially varying background, which was dominated by faint reflected laser light. This approach enabled both frame level identification of ejecta plumes and construction of a time ordered event catalog suitable for statistical analysis. The catalog allowed comparison of event magnitude, brightness, and spatial distribution across beam energies and target temperatures, and centroid tracking provided a measure of directional coherence in consecutive events. Python notebook code used for analysis also included in dataset, .jpynb