Abstract
The interaction of both photoelectrons and X-rays with self-assembled monolayers of n-alkanethiols on gold has been measured using synchrotron radiation as the photon source in the energy range 140−1100 eV. The attenuation length of photoelectrons (λ) was found to vary from a minimum of ∼5 A at an electron kinetic energy (E) of 100 eV up to ∼23 A at a kinetic energy of 1000 eV and can be described by the expression λ = 0.3E0.64 in the range 300−1000 eV. Exposure of the self-assembled monolayer to X-rays leads to fission of the C−S bond with a cross section of the order of 10-17 cm2 which diplays no apparent dependence on the incident photon energy.
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