1991 Fiscal Year Final Research Report Summary
Secondary Ion Generation Mechanism Studied by Multi-photon Excima Laser Ionization
| Project/Area Number |
01460084
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
応用物理学一般(含航海学)
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| Research Institution | Osaka University |
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Principal Investigator |
SHIMIZU Ryuichi Faculty of Engineering, Osaka Univ. Professor, 工学部, 教授 (40029046)
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| Co-Investigator(Kenkyū-buntansha) |
KASAI Hideaki Faculty of Engineering, Osaka Univ. Asociate Professor, 工学部, 助教授 (00177354)
KAWATOH Eizo Faculty of Engineering, Osaka Univ. Assistant, 工学部, 助手 (60195112)
UEDA Kazuyuki Faculty of Engineering, Osaka Univ. Associate Professor, 工学部, 助教授 (60029212)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Quantitative Surface Analysis / Multi-photon Ionization / Secondary Ion Mass Spectroscopy / Sputtering / Ion implantation / Surface Binding Energy |
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| Research Abstract |
We have succeeded to develop Multi-Photon Ionization System, which enables us to perform quantitative secondary ion mass spectroscopy as well as precise measurement of velocity distribution of sputtered particles. Figure shown below is schematic diagram of the systems. Typical conditions of the manurement are as follows : Laser beam size, 0.9m x 0.3m ; Laser intensity 33mJ, ion be&n 1-3, muA for cleaning and lO-3OnA for the manurement of sputtered particles ; Vacuum lxlO^<-9>Torr.
The results are summarized ;
(1) Quantitative surface analysis for Al-Cu alloys have indicated that concentration of AI is determined so accurately as C_<A1>=25.4<plus-minus>0.446% for true concentration 26%.
(2) This type of quantitative surface analysis can be performed with high stability almost unsensitive to the variation of surface cont&nination and vacuum deterioration.
(3) It has, first, bean observed that velocity distribution of sputtered atoms from Cu-Ni alloy under Ar+ ion bonbardment is slightly dependent on the ion dose.
(4) The analysis has led to conclusion that the primary Are ions implanted in the surface of Cu-Ni alloy do change the actual surface binding energy, i. e., high dose leads to lower the surface binding energy.
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