In bubble-assisted Liquid Hole Multipliers (LHM), developed for noble-liquid radiation detectors, the stability of the bubble and the electro-mechanical properties of the liquid-to-gas interface play a dominant role in the detector performance. A model is proposed to evaluate the static equilibrium configurations of a bubble sustained underneath a perforated electrode immersed in a liquid. For the first time bubbles were optically observed in LAr; their properties were studied in contact with different material surfaces. This permitted investigating the bubble-electrodynamics via numerical simulations; it was shown that the electric field acts as an additional pressure term on the bubble meniscus. The predictions for the liquid-to-gas interface were successfully validated using X-ray micro-CT in water and in silicone oil at STP. The proposed model and the results of this study are an important milestone towards understanding and optimizing the parameters of LHM-based noble-liquid detectors.

在为稀有液体辐射探测器开发的气泡辅助液孔倍增器 (LHM) 中，气泡的稳定性和液气界面的机电特性在探测器性能中起主导作用。提出了一个模型来评估泡在浸入液体中的穿孔电极下方的静态平衡配置。首次在 LAr 中以光学方式观察到气泡；在与不同材料表面接触的情况下研究了它们的特性。这允许通过数值模拟研究气泡电动力学；结果表明，电场作为气泡弯液面的附加压力项。在 STP 的水中和硅油中使用 X 射线显微 CT 成功验证了对液气界面的预测。