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.
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.