Physics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13a3002r&link_type=abstract
New Journal of Physics, Volume 13, Issue 1, pp. 013002 (2011).
Physics
1
Scientific paper
The impact of argon and xenon noble gas ions on Pt(111) in grazing incidence geometry are studied through direct comparison of scanning tunneling microscopy images and molecular dynamics simulations. The energy range investigated is 1-15 keV and the angles of incidence with respect to the surface normal are between 78.5° and 88°. The focus of the paper is on events where ions gently enter the crystal at steps and are guided in channels between the top most layers of the crystal. The trajectories of the subsurface channeled ions are visible as trails of surface damage. The mechanism of trail formation is analyzed using simulations and analytical theory. Significant differences between Xe+ and Ar+ projectiles in damage, in the onset energy of subsurface channeling as well as in ion energy dependence of trail length and appearance are traced back to the projectile and ion energy dependence of the stopping force. The asymmetry of damage production with respect to the ion trajectory direction is explained through the details of the channel shape and subchannel structure as calculated from the continuum approximation of the channel potential. Measured and simulated channel switching in directions normal and parallel to the surface as well as an increase of ions entering into channels from the perfect surface with increasing angles of incidence are discussed.
Michely Thomas
Redinger Alex
Rosandi Y.
Standop Sebastian
Urbassek Herbert M.
No associations
LandOfFree
Making channeling visible: keV noble gas ion trails on Pt(111) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Making channeling visible: keV noble gas ion trails on Pt(111), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Making channeling visible: keV noble gas ion trails on Pt(111) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1608725