arXiv subjects

Wousik Kim

Publications and source records attributed to Wousik Kim.

2 recordsLinked to original sources

arXiv2025

Removal of Lunar Dust Simulant from Cold Dielectric Surfaces with Electron Beam

It has been demonstrated that lunar dust simulant can be efficiently lofted and removed from various room temperature surfaces in vacuum when exposed to a low-energy electron beam. This provides a potential solution to the well-known dust risks associated with future lunar exploration. Considering its application in extremely cold regions on the Moon, we experimentally demonstrated dust lofting from surfaces at temperatures as low as -123degC using an electron beam. Compared to room temperature applications, we found that the dust lofting from a glass surface slows down significantly at lower temperatures. Possible reasons are discussed. We also found that the dust lofting process can be accelerated when the electron beam energy is swept within an optimal range and rate.

physics.space-ph↗

arXiv2023

Recommending Low-Cost Compact Space Environment and Space Weather Effects Sensor Suites for NASA Missions

As miniaturized spacecraft (e.g., cubesats and smallsats) and instrumentation become an increasingly indispensable part of space exploration and scientific investigations, it is important to understand their potential susceptibility to space weather impacts resulting from the sometimes volatile space environment. There are multitude of complexities involved in how space environment interacts with different space hardware/electronics. Measurements of such impacts, however, have been lacking. Therefore, we recommend developing and/or procuring low-cost, low-power consumption, and compact sensor suites (mainly for space weather and impact purposes) and flying them on all future NASA (and U.S in general) missions in order to measure and quantify space weather impacts, in addition to the main instrumentation.

astro-ph.IM↗