The broadening of the oxygen absorption line P9P9 due to wall collisions of entrapped oxygen gas in nanoporous solid discs of average pore diameters between 70 and 150 nm is studied using GAs in Scattering Media Absorption Spectroscopy (GASMAS) method. A model based on the kinetic theory of gasses is used to find a correlation between the wall-collision broadening and the average pore diameter measured by Mercury Intrusion Porosimetry (MIP). The shape of the pores of investigated samples is found to be more consistent with a model of pores of cylindrical shapes of heights much larger than their diameters.

中文翻译：

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在散射介质吸收光谱中使用气体研究纳米多孔氧化铝中的 O2 谱线展宽

使用 GAs 在散射介质吸收光谱 (GASMAS) 方法中研究了由于平均孔径在 70 到 150 nm 之间的纳米多孔固体盘中夹带的氧气的壁碰撞而导致的氧吸收线 P9P9 的加宽。使用基于气体动力学理论的模型来发现壁碰撞加宽与压汞孔隙率法 (MIP) 测量的平均孔径之间的相关性。发现所研究样品的孔隙形状与高度远大于其直径的圆柱形孔隙模型更加一致。