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首页> 外文期刊>The Journal of Chemical Physics >Photofragmentation dynamics and dissociation energies of MoO and CrO
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Photofragmentation dynamics and dissociation energies of MoO and CrO

机译：Moo和CRO的照相动态和解离能

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摘要

Neutral metal-containing molecules and clusters present a particular challenge to velocity map imaging techniques. Common methods of choice for producing such species-such as laser ablation or magnetron sputtering-typically generate a wide variety of metal-containing species and, without the possibility of mass-selection, even determining the identity of the dissociating moiety can be challenging. In recent years, we have developed a velocity map imaging spectrometer equipped with a laser ablation source explicitly for studying neutral metal-containing species. Here, we report the results of velocity map imaging photofragmentation studies of MoO and CrO. In both cases, dissociation at the two- and three-photon level leads to fragmentation into a range of product channels, some of which can be confidently assigned to particular Mo* (Cr*) and O atom quantum states. Analysis of the kinetic energy release spectra as a function of photon energy allows precise determination of the ground state dissociation energies of MoO (=44 064 +/- 133 cm(-1)) and CrO (=37 197 +/- 78 cm(-1)), respectively. Published by AIP Publishing.
机译：含中性金属的分子和簇存在于速度映射成像技术的特殊挑战。制备这种物种的常用方法 - 例如激光烧蚀或磁控溅射 - 通常产生各种含金属物种，并且在没有质量选择的可能性，甚至确定解离部分的身份可能是挑战的。近年来，我们开发了一种速度地图成像光谱仪，其具有激光消融源，用于研究含中性金属物种。在这里，我们报告了MOO和CRO的速度映射成像光反射研究的结果。在这两种情况下，两种和三光子水平的解离导致分段到一系列产品通道中，其中一些可以自信地分配给特定的Mo *（Cr *）和O原子量子状态。作为光子能量的函数的动能释放光谱分析允许精确地确定MOO的地位解离能（= 44 064 +/- 133cm（-1））和CRO（= 37 197 +/- 78cm（ -1））分别。通过AIP发布发布。

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