ELEMENTAL LASER SECONDARY-NEUTRAL-MASS SPECTROSCOPY SIGNAL ENHANCEMENT IN LAYER INTERFACES - NEW EVIDENCE FOR CLUSTER CONTRIBUTION IN NONRESONANT LASER MULTIPHOTON POSTIONIZATION

被引:13
作者
NICOLUSSI, G
HUSINSKY, W
BETZ, G
机构
[1] Institut für Allgemeine Physik, Technische Universität Wien, 1040 Wien
关键词
D O I
10.1103/PhysRevLett.71.1518
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report evidence of a significant signal enhancement caused by fragmentation of heteronuclear metal clusters during interface analysis using laser secondary-neutral-mass spectroscopy (LSNMS). Measurements have been performed in Ti-Pt-Ti thin film interfaces and pure Ti. The LSNMS signal of atomic Ti shows a pronounced peak in the interfaces. A comparison of the velocity distributions of Ti atoms in the Ti-Pt interface and in the pure Ti layer clearly shows that clusters, in particular TiPt clusters, are responsible for the interface peak.
引用
收藏
页码:1518 / 1521
页数:4
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