Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1986),
  • paper THAA2

Time-resolved laser-induced fluorescence studies of electronically induced desorption from alkali halides

Not Accessible

Your library or personal account may give you access

Abstract

It has been known for some time1 that alkali halide surfaces can be efficiently sputtered in ultrahigh vacuum by electron and photon bombardment at energles well below the core-level excitaron thresholds. For some time, we have been doing experiments deslgned to elucidate the detailed atomic-scale dynamics of both electron- and photon-stimulated desorption (ESD/PSD) processes on alkali halide crystals, including measurement of yields as a function of bombarding energy and surface temperature, velocity distributions, and desorption yield as a function of time following irradiation for both ground-state and excited-state neutral atoms. Laser-lnduced fluorescence (LIF) spectroscopy has played a key role in these studies2 by allowing the labeling of desorbing ground- state neutral atoms, thus allowing for direct comparison between ground-state and excited-state desorption mechanisms. Since the neutral desorbing species outnumber the desorbing ions by several orders of magnitude, this technique allows us to analyze the dominant channels through which electronic energy deposited in a surface is redirected to produce bond breaking and ultimately desorption, erosion, and ablation.

© 1986 Optical Society of America

PDF Article
More Like This
Laser-Synchrotron Studies of UV-Photon-Stimulated Desorption in Alkali Halide Crystals

Richard F. Haglund and Norman H. Tolk
PD5 Short Wavelength Coherent Radiation: Generation and Applications (HFSW) 1986

Excitonic Mechanism of Photon-Stimulated Desorption of Excited Alkali Atoms from Alkali Halides

Patrick H. Bunton, Richard F. Haglund, Dengfa Liu, and Norman H. Tolk
WC9 The Microphysics of Surfaces: Beam-Induced Processes (MSBA) 1991

The Role of F-Centers in Electron- and Photon-Stimulated Desorption from Alkali Halides

G. M. Loubriel, T. A. Green, N. H. Tolk, and R. F. Haglund
WC9 Microphysics of Surfaces, Beams, and Adsorbates (MSBA) 1987

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved