Two-photon detachment cross sections for O-, Cu-, Ag- and Au- at 1064 nm

H. Stapelfeldt, C. Brink, H.K. Haugen

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Abstrakt

Absolute two-photon detachment cross sections were determined for irradiation of oxygen, copper, silver and gold negative ions at a wavelength of 1064 nm. A 12 ns Q-switched ND:YAG laser and ion beams of keV energies were employed. Results were derived from measurement of the onset of depletion saturation at higher laser intensity. The respective cross sections in units of 10-49 cm4 s are 0.42 (-0.16, +0.19) [O-], 1.6 (-0.6, +0.7) [Cu-], 3.1 (-1.1, +1.3) [Ag-] and 0.39 (-0.16, +0.19) [Au-]
OriginalsprogEngelsk
TidsskriftJournal of Physics B: Atomic, Molecular and Optical Physics
Vol/bind24
Udgave nummer18
Sider (fra-til)437 - 41
ISSN0953-4075
StatusUdgivet - 1991
Udgivet eksterntJa

Emneord

  • copper
  • electron detachment
  • gold
  • negative ions
  • oxygen
  • silver
  • two-photon processes

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