Measurements of the velocity spectrum of sputtered Na from a NaI target by a Doppler-shift laser spectrometer

Journal Article · Tue Nov 01 04:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323540· OSTI ID:7208477

Husinsky, W; Bruckmueller, R; Blum, P; Viehboeck, F; Hammer, D; Benes, E

By means of a Doppler-shift laser spectrometer (DSLS) we have measured the energy spectrum of Na emerging from a NaI surface bombarded with He/sup +/, Ne/sup +/, Ar/sup +/, Kr/sup +/, and Xe/sup +/ ion beams of about 30 ..mu..A/cm/sup 2/ and within an energy range 10--30 keV. The measured spectra consist of a thermal and a high-energy contribution, the relative intensities of which strongly depend on the mass of the bombarding ions. The sputter mechanism can be explained by formation of so-called excitons in the bulk and by the random collision cascade theory. Furthermore, selective sputtering of I in the case of Kr/sup +/ and Xe/sup +/ bombardment must be taken into account. The use of the DSLS yields a good signal-to-noise ratio even for particle densities less than 100 particles/cm/sup 3/ within a velocity interval ..delta..v=50 m/sec. The velocity resolution achieved was 50 m/sec in the energy region up to 1 eV and 1% in the high-energy region.

• Research Organization: Institut fuer Allgemeine Physik, Technishche Universitaet, Wien, Karlsplatz 13 A-1040 Wien, Austria
• OSTI ID: 7208477
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:11; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ALKALI METAL COMPOUNDS
ALKALI METALS
ARGON IONS
BEAMS
CHARGED PARTICLES
DOPPLER EFFECT
DUOPLASMATRONS
DYE LASERS
ELECTROMAGNETIC RADIATION
ELECTRON TUBES
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITONS
HALIDES
HALOGEN COMPOUNDS
HELIUM IONS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
ION BEAMS
ION SOURCES
IONS
IRRADIATION
KEV RANGE
KEV RANGE 10-100
KRYPTON IONS
LASER RADIATION
LASERS
MEASURING INSTRUMENTS
METALS
NEON IONS
PHOSPHORS
PLASMATRONS
QUASI PARTICLES
RADIATIONS
RESOLUTION
RESONANCE ABSORPTION
SODIUM
SODIUM COMPOUNDS
SODIUM IODIDES
SPECTRA
SPECTRAL SHIFT
SPECTROMETERS
SPECTROSCOPY
SPUTTERING
XENON IONS