Photoinduced Molecule Formation of Spatially Separated Atoms on Helium Nanodroplets.
Photoinduced Molecule Formation of Spatially Separated Atoms on Helium Nanodroplets.
复制标题
氦纳米液滴上空间分离原子的光诱导分子形成。
DOI：
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发表时间：
2018
影响因子：
5.7
通讯作者：
W. Ernst
中科院分区：
文献类型：
--
作者：
F. Lackner;W. Ernst
除了用作光谱研究的冷基质外，超流氦液滴还充当分子和团簇合成的冷环境。由于氦液滴中分子的振动频率与自由分子值相比几乎没有变化，因此可以假设溶剂化粒子无摩擦地移动，并且一旦它们的路径交叉就会发生反应。有一些无法解释的观察结果似乎表明一个液滴上的两个物种没有形成键而是保持隔离。在这项工作中，我们对掺杂有一个铷和一个锶原子的氦液滴进行了系统研究，结果表明，除了与 RbSr 发生反应外，还有可能在一个液滴上发现分离的 Rb 和 Sr 原子，它们仅在电子激发后发生反应。我们的结果进一步表明基态 Sr 原子可以驻留在液滴的表面和内部。
Besides the use as cold matrix for spectroscopic studies, superfluid helium droplets have served as a cold environment for the synthesis of molecules and clusters. Since vibrational frequencies of molecules in helium droplets exhibit almost no shift compared to the free molecule values, one could assume the solvated particles move frictionless and undergo a reaction as soon as their paths cross. There have been a few unexplained observations that seemed to indicate cases of two species on one droplet not forming bonds but remaining isolated. In this work, we performed a systematic study of helium droplets doped with one rubidium and one strontium atom showing that besides a reaction to RbSr, there is a probability of finding separated Rb and Sr atoms on one droplet that only react after electronic excitation. Our results further indicate that ground-state Sr atoms can reside at the surface as well as inside the droplet.
影响因子：
1.8
作者：
Spence D
通讯作者：
Spence D
氦纳米液滴中溶剂化的铝原子和二聚体的共振双光子电离光谱
DOI：
10.1063/1.4908533
发表时间：
2015
期刊：
The Journal of chemical physics
影响因子：
--
作者：
S. A. Krasnokutski;F. Huisken
通讯作者：
F. Huisken