Separation of the low-frequency mode from the inelastic continuum scattering of a sers active electrode

An I₂ vapor cell and an optical multichannel analyzer allowed the simultaneous detection (from −60 to +60 cm⁻¹) of inelastic scattering from a Ag electrode (electrochemically roughened in 0.1 M KI). Separation of the low-frequency mode, which peaks at ≈7 cm⁻¹, from the inelastic continuum, which increases in intensity as ∣Δω∣→ 0, was accomplished by dividing the data (spectra) by the Bose-Einstein function. The potential dependence of the low-frequency mode and its spectral profile were investigated.