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H2D＋与固体的相互作用及H2D＋的结构测量
The interaction of H2D+ with thin solid foils and the detection of its structure
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摘要: 报道了分子离子H2D＋与超薄固体膜相互作用的实验研究．阐述了H2D＋对天体物理等领域的重要性．简述了近几年针对H2D＋的研究，分析了在实验室条件下H2D＋的形成机理，给出了其与固体膜相互作用产生库仑爆炸的能谱．进行了辅助实验，使D2＋与相同固体膜发生作用，并利用这个结果和其他分析与处理方法，将H2D＋的D＋能谱中D2＋计数部分做了去除．实验再次证实了分子离子与固体相互作用时尾流效应的存在，采用三体尾流效应对比的方法最终确定了H2D＋结构形状和键长．对H2D＋库仑爆炸后的较重离子尾流谱形状的反常现象做了讨论和分析．Abstract: The Interaction between molecular ion H2D+ and ultra-thin solid film is reported for the first time. The importance of H2D+ in the areas such as astrophysics is stated and the study on H2D+ of recent years is outlined. The formation mechanism for the H2D+ under laboratory conditions is also analysed. The structural pattern of H2D+ and the mean internuclear separation are determined using Coulomb explosion technique. Once again, the existence of wake effects in the interaction of molecular ions with solid is confirmed and three-body wake effect module is used to determine the geometric structure of H2D+. Finally, the unusual structure of the wake of energy spectrum for the heavier ions in the H2D+ Coulomb explosion is discussed.
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