2006
DOI: 10.1016/j.nimb.2006.08.001
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Energy loss and angular distributions of gold cluster constituents

Abstract: Heavy gold cluster beams are accelerated to high energy (hundreds of keV/atom) and break up when going through a thin foil. The energy and angular distributions of the constituents are then measured and very well reproduced by a SRIM code calculation, which takes into account atomic interactions only. These distributions do not depend on the number of constituents in the cluster and are found to be the same as those of single gold atoms at the same velocity, in the studied energy range

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Cited by 4 publications
(5 citation statements)
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“…This effect is not observed for polyatomic ions with up to seven atoms 13 but is observed in simulations of 13 atoms 14 . The effect also seems to disappear for projectiles with >200 keV/atom 15 . The morphological observations and molecular dynamic simulations indicate an energy deposition process in a hydrodynamic flow 16 .…”
Section: Introductionmentioning
confidence: 92%
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“…This effect is not observed for polyatomic ions with up to seven atoms 13 but is observed in simulations of 13 atoms 14 . The effect also seems to disappear for projectiles with >200 keV/atom 15 . The morphological observations and molecular dynamic simulations indicate an energy deposition process in a hydrodynamic flow 16 .…”
Section: Introductionmentioning
confidence: 92%
“…14 The effect also seems to disappear for projectiles with >200 keV/atom. 15 The morphological observations and molecular dynamic simulations indicate an energy deposition process in a hydrodynamic flow. 16 A distinct characteristic of the massive cluster solid impact is the extreme energy density and pressure transient.…”
Section: Introductionmentioning
confidence: 96%
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“…Gold cluster behaves as a group of n independent Au atoms, with respect to the energy loss and straggling processes. 29 Assuming that this result still holds for 30keV/atom Au 4þ 400, we used SRIM calculations 30 to calculate the energy deposition in the solid. The estimated deposited energy in PMMA reaches 12 MeV along about 40 nm in depth with a small lateral scattering dimension close to 20 nm.…”
Section: B Volume Of Emissionmentioning
confidence: 99%
“…The influence of the projectile mass and energy is being studied in order to investigate this new hydrodynamic regime of the solid–particle interaction. In the field of cluster impact, our experiment and its analysis will allow to delimit the transition region from conditions where the cluster constituents interact independently (with or without overlapping of their collision cascades)7 and those where hot spikes due to hydrodynamic effects dominate 6. This study also aims to find the best energy for the development of new time of flight mass spectrometry (ToFMS) methods involving massive cluster beams to microanalyze surfaces with increased yields.…”
Section: Introductionmentioning
confidence: 99%