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Total and positronium formation cross sections have been measured for positron scattering from H 2 O and HCOOH using a positron beam with an energy resolution of 60 meV (full-width at half-maximum (FWHM)). The energy range covered is 0.5-60 eV, including an investigation of the behavior of the onset of the positronium formation channel using measurements with a 50 meV energy step, the result of which shows no evidence of any channel coupling effects or scattering resonances for either molecule.doi:10.1088/1367-2630/11/10/103036 fatcat:6hy2aassajg5thflixkxhxurem