Wensink Frank J, Münst Maximilian G, Heller Jakob, Ončák Milan, Bakker Joost M, van der Linde Christian
Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
Universität Innsbruck, Institut für Ionenphysik und Angewandte Physik, Technikerstraße 25, 6020 Innsbruck, Austria.
J Chem Phys. 2020 Nov 7;153(17):171101. doi: 10.1063/5.0024675.
A laser vaporization cluster source is coupled to the Fourier-transform ion cyclotron resonance mass spectrometer beamline of the free-electron laser for intracavity experiments. Gas phase metal ions and their oxides (VO , NbO , and TaO ) are formed and spectroscopically characterized using IR multiple-photon dissociation spectroscopy via loss of atomic oxygen and overcoming fragmentation energies of 3 eV-6 eV. The signal is observed for all MO fundamental modes: the symmetric and anti-symmetric ν and ν stretch modes in the 900 cm-1000 cm range and the ν bending mode in the 300 cm-450 cm range. A remarkable substructure is observed for the bending vibration, which is at least partly due to the rovibrational substructure.
激光汽化团簇源与用于腔内实验的自由电子激光的傅里叶变换离子回旋共振质谱仪束线相连。通过原子氧的损失并克服3电子伏特至6电子伏特的碎裂能，利用红外多光子解离光谱法形成气相金属离子及其氧化物（VO、NbO和TaO）并对其进行光谱表征。在所有MO基模中均观察到信号：900厘米至1000厘米范围内的对称和反对称ν和ν伸缩模以及300厘米至450厘米范围内的ν弯曲模。对于弯曲振动观察到一个显著的子结构，这至少部分归因于转动振动子结构。
