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利用激光直接溅射法产生了铁、钴、镍/磷二元团簇正负离子,并用串级飞行时间质谱仪研究了团簇离子的组份和激光光解规律.质谱研究表明,铁、钴、镍易与磷结合成簇,而且样品中磷含量的增加有助于大尺寸团簇离子的生成.当形成的团簇离子中含金属原子数目较少时,磷原子数目可在较大范围内变动,其中、、、(M=Fe、Co、Ni,n=2、3、4)团簇离子均具有较高的丰度；随着金属原子数目的增加,磷原子数目的变化范围相应地变窄,铁/磷趋向于形成原子数目比接近1∶1的团簇正离子,钴/磷则易形成富磷的团簇正离子,镍/磷团簇正离子中镍原子数远多于磷原子数,而这三种金属与磷形成的负离子团簇随样品中磷含量的增加由富金属簇向富磷簇转化.对部分团簇正离子的紫外激光光解表明,铁/磷团簇正离子中P4或P2光解时易剥落；而钴/磷、镍/磷团簇正离子的主要光解通道或是P4、P2的剥离,或是中性MnPm(m为偶数)碎片的失去.
The direct and positive ions of iron, cobalt and nickel / phosphorus binary clusters were produced by laser direct sputtering, and the components and laser photolysis of cluster ions were studied by tandem time-of-flight mass spectrometry. , Nickel is easy to combine with phosphorus cluster, and the increase of phosphorus content in sample contributes to the formation of large-sized cluster ions.When the number of metal atoms in cluster ions is less, the number of phosphorus atoms can be in a wide range (M = Fe, Co, Ni, n = 2,3,4) clusters have higher abundance; with the increase of the number of metal atoms, the number of phosphorus atoms in the range of change corresponding The narrowing of the iron / phosphorus tends to form clusters of cations with atomic numbers closer to 1: 1, while cobalt / phosphorous tends to form phosphorus-rich clusters. The number of nickel atoms in nickel / phosphorus clusters is much greater And the anion clusters formed by these three metals and phosphorus were transformed from rich metal clusters to phosphorus rich clusters with the increase of phosphorus content in the samples.Ultraviolet laser photolysis of some cluster cations showed that iron / The cluster positive ions P4 or P2 easy to peel photolysis; and cobalt / phosphorus, nickel / phosphorus cluster positive photolysis channel Or P4, P2 stripping, or loss of neutral MnPm (m is even) fragments.