Mechanism of fragmentation of organic molecules during keV particle bombardment

D.W. Moon, N. Winograd
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引用次数: 7

Abstract

A simplified scheme is presented to distinguish between surface and gas-phase fragmentation of molecular ions in SIMS or FABMS experiments. The scheme is based on the measurement of the polar angle distribution of ejected parent and daughter cluster-ions and is derived from straightforward considerations of classical mechanics. Examples are given for chlorobenzene, benzene and pyridine adsorbed onto Ag(111) at 153 K.

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keV粒子轰击过程中有机分子破碎机理研究
在SIMS或FABMS实验中,提出了一种区分分子离子表面和气相破碎的简化方案。该方案基于喷射的母簇离子和子簇离子的极角分布的测量,并从经典力学的直接考虑中推导出来。给出了氯苯、苯和吡啶在153 K时吸附在Ag(111)上的例子。
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Editorial Subject index Author index High resolution accurate mass measurements of FAB-generated ions by use of peak matching and multichannel analyzer techniques. Secondary ion mass spectrometry of low-temperature solids
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