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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Interaction Dynamics of Inert Gases on Tungsten and Copper Surfaces

등록일
2011년 8월 2일 21시 13분 23초
접수번호
1426
발표코드
Ⅲ-PHYS.P-30 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅲ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
김상아, 이종백, H. K. Shin1
전남대학교 화학교육과, Korea
1Department of chemistry, University of Nevada, United States
Interaction dynamics of inert gases on tungsten and copper surfaces have been studied at collision energies below, at, above the adsorption threshold by means of classical trajectory procedures. Flow of energy between the reaction zone and the bulk solid phase is treated in the generalized Langevin equation approach. The model is based on the reaction zone atoms interacting with a finite number of primary-system silicon atoms, which are coupled to the heatbath. Molecular time scale trajectory calculations show that relatively few atoms making up the solid are needed to obtain reliable data on energy transfer to the solid. The dissipation of reaction energy to the heat bath can be adequately described using a 10-atom chain with the chain end bound to the rest of the solid. The dissipation of energy to the inner region of the solid is much longer than the reaction time scale. At and below the threshold, adsorption occurs when the chain length is sufficiently long. The incident particle becomes only briefly trapped on the chain when the length in not sufficiently long.

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