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Positrons in the energy range 12 - 1000 eV have been used to study monolayers of ω-tricosenoic acid on an aluminum substrate placed at right angles to the incident positrons. Doppler Broadening spectra and the ratios of 3γ/2γ annihilations were used to infer the presence of two annihilation states, possibly associated with the interface between the LB film and the substrate.


Journal article


Materials Science Forum

Publication Date





533 - 536