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首页> 外文期刊>Physics - Uspekhi >Laser IR fragmentation of molecular clusters: the role of channels for energy input and relaxation, the influence of surroundings, and the dynamics of fragmentation
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Laser IR fragmentation of molecular clusters: the role of channels for energy input and relaxation, the influence of surroundings, and the dynamics of fragmentation

机译:激光IR分散分子集群:通道的作用,用于能量输入和放松的影响,周围环境的影响以及碎片的动态

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摘要

The results of research into the infrared (IR) laser fragmentation of molecular clusters by resonant vibrational excitation of their constituent molecules are presented with special attention given to the role of cluster environment, the energy input and relaxation channels, and dynamical aspects. For this purpose, the results of experiments with free homogeneous and mixed molecular clusters and of experiments with clusters inside or on the surface of large inert gas clusters are analyzed, the laser excitation pulses varying in wavelength and duration. Data on the character and rate of cluster fragmentation, and on the intramolecular and intracluster vibrational energy relaxation times in clusters are discussed. Results of an investigation into the structure and dynamics of molecular clusters and atomic-molecular complexes obtained by IR photo dissociation spectroscopy and the spectroscopy of photofragments are analyzed. Methods for generating heterogeneous molecular clusters, for size-selecting clusters. and for studying the IR dissociation and IR fragmentation of clusters are also briefly considered.
机译:通过谐振振动激发它们的构成分子的红外线(IR)激光片段的研究结果具有特别关注,特别关注集群环境,能量输入和放松通道和动态方面。为此目的,分析了具有游离均匀和混合分子簇的实验和大型惰性气体簇的表面内或簇的实验的结果,激光激发脉冲在波长和持续时间内变化。讨论了群体碎片的特征和速率的数据,并讨论了集群中的分子内和腔内振动能量松弛时间。分析了通过IR照片解离光谱法获得的分子簇的结构和动力学的调查结果,并进行了光量分子的光谱分析。用于产生异质分子簇的方法,用于尺寸选择簇。对于研究IR解离和IR分离和IR簇的破碎化也被简要考虑。

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