"4" . "RIV/00216208:11320/07:10084085" . "1"^^ . "418004" . "Dauwe, Charles" . "10" . "Palacio, C. A." . . . . . . . . "4"^^ . . "6"^^ . . "1610-1634" . "11320" . "Z(MSM0021620834)" . . "Doppler broadening of annihilation radiation (DBAR) measurements have been performed in uniaxially hot-drawn poly(methylmethacrylate) (PMMA) samples. An anisotropy of the free volume holes (FVHs) has been detected by measuring the deformed samples at the stretching and transverse directions and also as a function of the orientation angle (0 degrees-90 inverted perpendicular) with respect to the stretching direction. The momentum distribution of p-Ps was calculated as a function of the potential well size and depth and compared with experiment." . . "000250716700075" . "Segers, D." . . "Laforest, N." . "Doppler broadening of positron annihilation radiation as a probe for the anisotropy of free-volume-holes in polymers"@en . "Doppler broadening of annihilation radiation (DBAR) measurements have been performed in uniaxially hot-drawn poly(methylmethacrylate) (PMMA) samples. An anisotropy of the free volume holes (FVHs) has been detected by measuring the deformed samples at the stretching and transverse directions and also as a function of the orientation angle (0 degrees-90 inverted perpendicular) with respect to the stretching direction. The momentum distribution of p-Ps was calculated as a function of the potential well size and depth and compared with experiment."@en . "[D7AF2F3DCA75]" . . . "Physica Status Solidi. C. Solid State Physics" . "Para-positronium.; Doppler broadening; Anisotropy of FVH; Free-volume-hole; PMMA"@en . "Djourelov, N." . "Kuriplach, Jan" . . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Doppler broadening of positron annihilation radiation as a probe for the anisotropy of free-volume-holes in polymers" . "Doppler broadening of positron annihilation radiation as a probe for the anisotropy of free-volume-holes in polymers"@en . . "Doppler broadening of positron annihilation radiation as a probe for the anisotropy of free-volume-holes in polymers" . "RIV/00216208:11320/07:10084085!RIV11-MSM-11320___" .