Laser-induced desorption from sapphire surfaces

Conference · Sat Feb 29 23:00:00 EST 1992

OSTI ID:10141637

Hamza, A V; Schildbach, M A

Laser-induced desorption of energetic ({approximately}7eV) aluminum ions was observed from clean and water-covered sapphire (1102) surfaces using time-of-flight mass spectrometry with laser wavelengths of 1064, 355, and 266 nm. In sharp contrast, O{sup +} (H{sup +} and OH{sup +}) ions were observed in electron-induced desorption measurements with 300 eV electrons from the bare (water- covered) (1102) surface. Sapphire surfaces were characterized with low energy electron diffraction, reflection electron energy loss spectroscopy, and Auger electron spectroscopy. 8 refs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10141637
• Report Number(s): UCRL-JC--110159; CONF-920462--1; ON: DE92012698
• Country of Publication: United States
• Language: English

Related Subjects

440800
47 OTHER INSTRUMENTATION
665300
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABLATION
ALUMINIUM IONS
ALUMINIUM OXIDES
DESORPTION
ELECTRON DIFFRACTION
ENERGY-LOSS SPECTROSCOPY
HYDROGEN IONS
HYDROXIDES
INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
LASER RADIATION
MISCELLANEOUS INSTRUMENTATION
OXYGEN IONS
SAPPHIRE
TIME-OF-FLIGHT MASS SPECTROMETERS