| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1682473 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2012 | 4 Pages |
Visible emission spectroscopy was conducted for atoms sputtered from tungsten surfaces under Kr+ ion irradiation (33–60 keV). A number of WI lines were observed in the wavelength of 360–490 nm. The emission intensity of the WI line at 400.88 nm was measured as a function of the distance from the surface. The mean normal velocity of W∗(5d5(6S)6p 7P4) atoms was measured by analyzing the exponential decay curves. No remarkable change in the velocity was found for different projectile energies. The average velocity was 5.6 ± 1.7 kms−1.
► Spectroscopy of sputtering atoms on W surfaces under Kr ion irradiation was conducted. ► Mean velocity of the excited atoms was measured by an optical method. ► The mean velocity was almost independent on the projectile kinetic energy.
