Level-energy-dependent mean velocities of excited tungsten atoms sputtered by krypton-ion bombardment

Keisuke Nogami, Yasuhiro Sakai, Shota Mineta, Daiji Kato, Izumi Murakami, Hiroyuki A. Sakaue, Takahiro Kenmotsu, Kenji Furuya, Kenji Motohashi

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)


Visible emission spectra were acquired from neutral atoms sputtered by 35-60 keV Kr+ ions from a polycrystalline tungsten surface. Mean velocities of excited tungsten atoms in seven different 6p states were also obtained via the dependence of photon intensities on the distance from the surface. The average velocities parallel to the surface normal varied by factors of 2-4 for atoms in the different 6p energy levels. However, they were almost independent of the incident ion kinetic energy. The 6p-level energy dependence indicated that the velocities of the excited atoms were determined by inelastic processes that involve resonant charge exchange.

ジャーナルJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
出版ステータス出版済み - 11 1 2015

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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