SIMS study of the mechanism of cluster formation during ion bombardment of alkali halides
SIMS study of the mechanism of cluster formation during ion bombardment of alkali halides
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SIMS研究碱卤化物离子轰击团簇形成机理
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
J. Rabalais
中科院分区：
文献类型：
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作者：
F. Honda;G. M. Lancaster;Y. Fukuda;J. Rabalais
报告了盐 NaX (X=F,Cl,Br,I) 和 CsX (X=F,I,ClO4) 的二次离子质谱 (SIMS)。详细描述了专为 SIMS 研究而设计的 UHV 光谱仪系统。已检测到质量大的二次离子簇，例如Na14F13+（569 amu）和Cs4I3+（913 amu），其最小寿命约为十分之几毫秒。检测到的一长串 MnXn−1+ 类型的簇离子表明这些簇具有高度的稳定性。 MnXn−m+ (m=−2,−1,0,1,2) 类型的不同系列观测星团的强度 I 根据 I=aMb 作为星团质量 M 的函数而变化，其中不同系列的 b 取值从 -1.98 到 -9.02。团簇的动能分布在 1-2 eV 区域具有最大值，一般来说，随着团簇尺寸的增加，该分布会转向较低的能量并变得尖锐。提出了一种与所有实验观察结果定性一致的聚类机制。该机制涉及...
The secondary ion mass spectra (SIMS) of the salts NaX (X=F,Cl,Br,I) and CsX (X=F,I,ClO4) are reported. A UHV spectrometer system designed for SIMS studies is described in detail. Large secondary ion clusters of high mass, e.g., Na14F13+(569 amu) and Cs4I3+(913 amu), whose minimum lifetimes are of the order of tenths of milliseconds, have been detected. The long series of detected cluster ions of the type MnXn−1+ indicates that there is a high degree of stability associated with these clusters. The intensities I of the different series of observed clusters of the type MnXn−m+ (m=−2,−1,0,1,2) vary as a function of cluster mass M according to I=aMb, where b takes values from −1.98 to −9.02 for various series. The kinetic energy distributions of the clusters have a maximum in the region 1–2 eV which, in general, shifts to lower energy and sharpens with increasing cluster size. A clustering mechanism which is qualitatively consistent with all of the experimental observations is proposed. This mechanism involv...