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Computer simulation of multimers sputtered from copper.

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Author
Delapain, Calvin Bricker
Date
1975
Advisor
Harrison, D. E. Jr.
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Abstract
The formation of clusters of sputtered atoms, called multimers, has been investigated in a digital computer simulation of single crystal copper bombarded with argon ions. Five formation mechanisms for sputtered dimers and four formation mechanisms for sputtered trimers were identified and analyzed in detail. The mechanisms did not reveal a single case in which a multimer was formed by the motions of a single ion or atom. Multimers were found to be caused by various interactions of the projectile ion with atoms in the first four layers of the crystal. Nearest neighbor atoms in the crystal rarely formed dimers or trimers. Next nearest neighbor clustering was much more common. Members of a multimer usually were not emitted simultaneously. Often four or five collisions by the ion or its primary knock-on atoms would intervene between the emission events, but the relatively slow speed of the emitted atoms still allowed cluster formation.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/20787
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  • 1. Thesis and Dissertation Collection, all items

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    Computer simulation of the sputtering of clusters 

    Harrison, D.E. Jr.; Delaplain, C.B. (American Institute of Physics, 1976-06-01);
    The formation of clusters of sputtered copper atoms from an argon-bombarded (100) copper surface has been simulated with a computer program which includes interatomic attractive forces. Dimer formation is very common. Most ...
  • Thumbnail

    Correlation of argon-copper sputtering mechanisms with experimental data using a digital computer simulation technique 

    Effron, Herbert M. (Monterey, California. U.S. Naval Postgraduate School, 1967-06);
    The sputtering process has been investigated by simulating the sputtering of single-crystal copper with 1=7 keV argon. A digital computer was used to build the crystal, bombard it, and move crystal atoms. Four mechanisms ...
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    Computer simulation of the angular dispersion of sputtered copper isotopes and a possible liquid splash effect 

    Kelly, Patrick Wayne, Sr, (Monterey, California. Naval Postgraduate School, 1977-06);
    The NPS computer simulation model was modified to study the angular dispersion and ring of sputtering sites formation of sputtered copper isotopes. the sputtering ratio as a function of the ion mass and the microcrystallite ...
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