A new secondary ion mass spectrometry (SIMS) system with high-intensity cluster ion source

被引:51
作者
Matsuo, J [1 ]
Okubo, C
Seki, T
Aoki, T
Toyoda, N
Yamada, I
机构
[1] Kyoto Univ, Quantum Sci & Engn Ctr, Kyoto 6068501, Japan
[2] Himeji Inst Technol, Lab Adv Sci & Technol, Himeji, Hyogo 67122, Japan
[3] Collaborat Res Ctr Cluster Ion Beam Proc Technol, Osaka, Japan
关键词
D O I
10.1016/j.nimb.2004.01.103
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Secondary ion mass spectrometry (SIMS) with gas cluster ion beams (GCIB) was investigated with experiments and molecular dynamics (MD) simulations. A new cluster SIMS system with high-intensity cluster ion source has been developed. Ar cluster ion beam with the average size of 2000 was utilized as a primary ion beam. The beam diameter is less than 1 mm at the target position, and a current density of 10 muA/cm(2) is obtained. The etch rate of Si with this current density is more than 20 nm/min, which is far beyond the etch rate in recent low energy SIMS system. The secondary ion intensity linearly increases with the acceleration voltage. A threshold voltage of a few keV for secondary ion emission was found. These results are consistent with previous sputtering experiments. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:463 / 467
页数:5
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