Analyses of breathing vibration of nearly spherical Ar clusters based on a dense sphere model
✍ Scribed by Yasushi Ozaki; Masahiko Ichihashi; Tamotsu Kondow
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 438 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The breathing vibratton of Ar, clusters, N= 13,20, 25, 30 and 55, was investigated by use of a dense sphere model, in which the clusters were approximated by a dense sphere; the breathing vibration corresponds to the symmetric stretch vibration of the dense sphere. The average distance (F), which is an index of the breathing motion, and its variance (s') of all the Ar atoms with respect to the center of mass were calculated as a function of time by use of the molecular dynamics method. The frequency spectrum of i (r spectrum) was derived from the time evolution of r. The frequency of the breathing vibration, &,b, obtained from the rspectrum was compared with that of the symmetric stretch vibration, fbs, calculated analytically based on the dense sphere model. As the cluster size increased,&, bad a tendency to agree with&s.