Theoretical calculations of the self-reflection coefficients for some species of ions

Zhengming, Luo; Gou, Chao; Hou, Qing

doi:10.1016/s0168-583x(02)00854-6

Cited by 2 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two possible explanations exist to account for the observed erosion results. One is that the reflection coefficient of ionized beryllium on a beryllium surface in a plasma environment is much higher than the value usually calculated in a static bombardment model [17]. The other is that the beryllium being deposited by the plasma on the surface of the sample erodes with a different yield from beryllium atoms in a lattice structure.…”

Section: Discussionmentioning

confidence: 79%

Measuring the difference between gross and net erosion

2012

View full text Add to dashboard Cite

A series of systematic experimental investigations are reported, using a beryllium-containing oven to seed a controlled and adjustable amount of impurities into a steady-state plasma. Beryllium impurity seeding of the plasma is used to simulate redeposition of eroded material to investigate the relationship between gross and net erosion. The measured net erosion rates from beryllium targets do not change when the influx of beryllium ions is increased unless the Be-seeding rate exceeds, by an order of magnitude, the beryllium surface loss rate, which was determined without beryllium seeding of the plasma. Measurements of the penetration distance of eroding beryllium atoms axially into the plasma column reveal that the reflection coefficient of the incident beryllium ions is unchanged, but the sputtering yield of the plasma-deposited surface beryllium is increased with respect to the bulk beryllium material by a factor of ∼10.

show abstract

Section: Discussionmentioning

confidence: 79%