An integrated instrument of DUV-IR photoionization mass spectrometry and spectroscopy for neutral clusters

The Review of Scientific Instruments
Hanyu ZhangJiannian Yao

Abstract

We have developed an integrated instrument combining deep ultraviolet laser ionization mass spectrometry (DUV-LIMS) and infrared multiphoton dissociation (IR-MPD) spectroscopy, abbreviated as DUV-IR. The 177.3 nm DUV laser (7 eV single-photon energy) has short pulse duration (15 ps) and appropriate pulse energy (∼20 µJ), which is found to be highly efficient for low-fragment photoionization of neutral metal clusters and molecules. A home-made cluster source is designed with an adjustable formation channel suitable for the generation of different cluster series. The well-aligned components of the reflection time-of-flight mass spectrometer, as well as the coaxial design of DUV laser and molecular beam, bring forth high sensitivity and high resolution of the DUV-LIMS. Taking these advantages, well-resolved neutral Vn (n = 1-43) and (Benzene)n (n = 1-25) clusters have been generated free of fragmentation. In addition to the generation and detection of neutral clusters, a fast-flow reaction tube is also designed downstream of the cluster source allowing to study their reactivity. In particular, a broad-range tunable IR laser (1.3-16 µm) is coupled with the DUV laser to attain IR-MPD spectroscopic analysis. This integrated system of...Continue Reading

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Citations

Dec 23, 2020·Physical Chemistry Chemical Physics : PCCP·Hanyu ZhangSi-Dian Li
Feb 6, 2021·The Journal of Physical Chemistry Letters·Hanyu ZhangFeng Pan
Mar 11, 2021·The Journal of Physical Chemistry. a·Lijun GengZhixun Luo
May 25, 2021·The Journal of Physical Chemistry Letters·Yuhan JiaZhixun Luo
Jul 22, 2021·Physical Chemistry Chemical Physics : PCCP·Xin LeiZhixun Luo
Jul 31, 2021·Journal of the American Society for Mass Spectrometry·Baoqi YinZhixun Luo
Jun 24, 2020·The Journal of Physical Chemistry. a·Lijun GengZhixun Luo
Sep 10, 2020·The Journal of Physical Chemistry Letters·Chaonan CuiZhixun Luo
Jul 1, 2020·The Journal of Physical Chemistry Letters·Baoqi YinJijun Zhao
Dec 1, 2021·The Journal of Physical Chemistry. a·Wen GanKlavs Hansen

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