193nm光下Pt(111)吸附N2O光解吸物质的飞行时间和内态分布

D. Masson, E. Lanzendorf, A. Kummel
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引用次数: 0

摘要

利用准分子激光(193 nm)的偏振紫外光对吸附在冷Pt(111)表面的N2O进行光解吸和光解。利用共振增强的N2和原子氧的多光子电离(MPI)光谱对解吸物质及其飞行时间(TOF)进行了监测。我们确定了三个主要通道:分子N2的热解吸,基电子态N2O的光解吸和弹道氧原子的弹射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Time-of-Flight and Internal State Distributions of Photodesorbed Species from N2O Adsorbed on Pt(111) by 193 nm light.
Polarized ultraviolet light from an excimer laser (193 nm) was used to photodesorb and photodissociate N2O adsorbed on a cold Pt(111) surface. The desorbed species and their time-of-flight (TOF) were monitored by resonantly enhanced Multi Photon Ionization (MPI) spectroscopy of N2 and atomic oxygen. We have identified three major channels: thermal desorption of molecular N2, photodesorption of ground electronic state N2O, and ejection of ballistic oxygen atoms.
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