Atomic and Ionic Impact Phenomena on Metal Surfaces

Implantation of He+ in candidate fusion first wall materials

“…One possible explanation is increased sputtering coefficients for non-perpendicular ion incidences. However, this would not increase the physical sputtering loss enough to account for the observed loss, even assuming the forward-sputtered material is not redeposited on the sample [7]. Another possible explanation is the loss of the small protrusions during the irradiation process.…”

Ion and fast neutral bombardment of surfaces in controlled fusion devices

“…[5][6][7][8] we estimate sputtering yields on iron-nickel-chromium alloys in · the.energy range 1 keV to 10 keV to be 0.03 for D, 0.04 for T, 0.3 for He, and 2.0 for Ar. These values are expected to be good to better than an order of magnitude· and, in fact, the value obtained this way falls within a factor of two of the experimental data in Fig.…”

Angular distributions of atoms sputtered from NiAl{110} and Ni{100}

“…A lot of studies have been done using the collector technique [3][4][5][6][7]. Experimental results show that preferential ejections of sputtered atoms occur along certain crystallographic directions.…”