Journal ArticleDOI
PHOTON EMISSION DURING BOMBARDMENT OF SOLIDS WITH ALKALI IONS IN THE ENERGY RANGE BETWEEN 2 AND 10 keV.
TLDR
In this article, experimentelle results regarding the emission of photons by the bombardment of solids with 2 to 10 keV alkali ions are reported regarding spatial and spectral distribution with respect to a sputtering mechanism.Abstract:
Experimental results are reported regarding the emission of photons by the bombardment of solids with 2 to 10 keV alkali ions. The results about spatial and spectral distribution are interpreted with respect to a sputtering mechanism. In this process sputtered particles are excited and emitted by atomic collisions with the projectile ion. Outside of the solid in front of the surface the excited particles interact electronically with the surface and recombine radiatively into deeper electronic states. So the higher photon yields for insulators and semiconductors in regard to metals can be explained. An attempt was made to interpret the spatial distribution of photon emission.
Es werden experimentelle Ergebnisse zur Photonenemission von Festkorpern beim Ionenbeschus mitgeteilt. Die Ergebnisse werden mit dem Zerstaubungsmechanismus erklart. Bei diesem Prozes werden die zerstaubten Teilchen durch Atomstose mit den Projektilionen angeregt und emittiert. Auserhalb des Festkorpers nahe der Oberflache treten die angeregten Teilchen in elektronische Wechselwirkung mit der Oberflache und rekombinieren strahlend in tieferliegende Elektronenzustande. So kann man die hohere Photonenausbeute fur Halbleiter und Isolatoren gegenuber Metallen verstehen. Es wird versucht, die raumliche Verteilung der Photonenemission zu erklaren.read more
Citations
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Journal ArticleDOI
Bombardment-induced photon emission from Al and Al2O3 targets
Roger Kelly,C.B. Kerkdijk +1 more
TL;DR: The role played by adsorbed or recoil-implanted oxygen is shown to be consistent with the band structures of Al and Al2O3 provided the electron affinity of Al 2O3 is ⩽ 0.8 eV as discussed by the authors.
Journal ArticleDOI
Optical radiation from low-energy ion--surface collisions.
C. W. White,N. H. Tolk +1 more
TL;DR: The spectral line shape from ejected atoms may be analyzed to provide information on the distribution of speeds and directions of the excited species; the line intensity provides a measure of the probability for creating the state.
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In situ spectrochemical analysis of solid surfaces by ion beam sputtering
Journal ArticleDOI
Formation of excited states by ion impact on surfaces
TL;DR: In this paper, the authors provide a comprehensive catalogue of available data and attempt to correlate the various observations and conclude that inner shell excitation is governed by electron promotion events in the transient quasi-molecule formed by a projectile and target atom.
Journal ArticleDOI
Line shape measurements of atoms sputtered from polycrystalline Cu, Zn, and Al by 300 keV Ar+ bombardment
TL;DR: In this paper, the line shape of atomic transitions of excited Cu, Zn, and Al atoms sputtered from polycristalline metal and from surface-coated Zn and Al by the bombardment with 300 keV Ar + ions has been measured.
References
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Journal ArticleDOI
Theory of Auger Ejection of Electrons from Metals by Ions
TL;DR: In this paper, a theory of the Auger transition is presented in which the form of the distribution in energy and relative total yield of ejected electrons are derived, and the effects of variation of atomic energy levels near the metal surface and the Heisenberg uncertainty principle makes it possible to account in detail for the experimentally observed energy distributions as well as the variation of these and of ion kinetic energy.
Journal ArticleDOI
Spectral Emissivity of Tungsten
TL;DR: In this article, a direct comparison of the spectral emissivity of a tungsten source and a blackbody source was performed over the wavelength interval 310 mμ to 800 mμ, and the temperature interval 1600°K to 2400°K.
Journal ArticleDOI
Excitation of Cu atoms by Ar ions and subsequent radiationless deexcitation of scattered particles near a Cu surface
W.F. Van der Weg,Dick J. Bierman +1 more
TL;DR: In this article, the profile of a Cu I spectral line, excited by bombardment with 80 keV Ar ions, was measured and the Doppler profile showed that the light-emitting particles have energies in the keV region.
Journal ArticleDOI
On the excited state of sputtered particles
W. F. van der Weg,P.K. Rol +1 more
TL;DR: In this article, the possible electronic transitions of ionized and excited atoms at small distances from metal surfaces are investigated and the results are applied to sputtered copper atoms, assuming that sputtered ion and excited atom are converted into atoms in the ground state by resonance processes.
Journal ArticleDOI
Measurements of Inelastic Energy Loss in Large-Angle Ar + on Ar Collisions at keV Energies
Gerry H. Morgan,Edgar Everhart +1 more
TL;DR: In this paper, the inelastic energy loss of large-angle collisions of ions with Ar atoms is measured as a function of incident energy and scattering angle, and a separate curve is obtained for each incident energy.
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