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Laboratory experiments model dust cloud dynamics using a vacuum ultraviolet source for photoionization of lunar dust.
A vacuum ultraviolet radiation source for photoionization of dust particles in laboratory model experiments to study the dynamics of dust clouds near the lunar surface is described. The source of vacuum ultraviolet radiation is an inductively coupled RF discharge in hydrogen. It is shown that the radiation in the line Lα (wavelength 121.6 nm, quantum energy 10.2 eV) is up to 150 mW with the power input into the discharge at the level of 50 W. The radiation power density at a distance of 10 cm from the source is 4 × 10–5 W/cm2, which exceeds the power density of solar radiation on the surface of the Moon in this range of wavelengths. This opens up prospects for using the proposed radiation source in laboratory modeling of dust cloud dynamics.
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Vodop’yanov et al. (2025) studied this question.
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