TY - JOUR
T1 - Internal and translational energy of sputtered silver dimers
T2 - a molecular dynamics study
AU - Wucher, A.
AU - Garrison, B. J.
PY - 1992/4/1
Y1 - 1992/4/1
N2 - The ejection of Ag2 molecules from a (111)-silver surface bombarded by normally incident Ar+ ions was studied by a molecular dynamics simulation using a many-body embedded-atom interaction potential. First, the dependence of the translational energy distribution on the polar ejection angle was calculated and compared to corresponding experimental results. Then, the internal energy distribution as well as the vibrational and rotational state distributions of sputtered Ag2 dimers were calculated and their correlation with the primary ion energy, the translational energy and the polar ejection angle was examined. It is found that the rotational-vibrational population can be well approximated by Boltzmann distributions revealing vibrational and rotational temperatures of 3000-5000 K and 8000-10000 K, respectively. The dependence of Tvib and Trot on the primary ion energy, the translational energy and the polar ejection angle of the sputtered molecules is shown to be relatively weak.
AB - The ejection of Ag2 molecules from a (111)-silver surface bombarded by normally incident Ar+ ions was studied by a molecular dynamics simulation using a many-body embedded-atom interaction potential. First, the dependence of the translational energy distribution on the polar ejection angle was calculated and compared to corresponding experimental results. Then, the internal energy distribution as well as the vibrational and rotational state distributions of sputtered Ag2 dimers were calculated and their correlation with the primary ion energy, the translational energy and the polar ejection angle was examined. It is found that the rotational-vibrational population can be well approximated by Boltzmann distributions revealing vibrational and rotational temperatures of 3000-5000 K and 8000-10000 K, respectively. The dependence of Tvib and Trot on the primary ion energy, the translational energy and the polar ejection angle of the sputtered molecules is shown to be relatively weak.
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U2 - 10.1016/0168-583X(92)95864-N
DO - 10.1016/0168-583X(92)95864-N
M3 - Article
AN - SCOPUS:0009577128
VL - 67
SP - 518
EP - 522
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
IS - 1-4
ER -