Positronium in solid phases of long-chain paraffins |
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| Institution: | 1. Graduate School of Science and Technology, Chiba University, 1-33 Yayoi-Chou, Inage-ku, Chiba 263-8522, Japan;2. Faculty of Education, Chiba University, 1-33 Yayoi-Chou, Inage-ku, Chiba 263-8522, Japan;3. Department of Molecular and Material Sciences, IGSES, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan;1. Rom Company Limited, Chuo-ku, Sapporo, Hokkaido 064-0804, Japan;2. Laboratory of Environmental Molecular Biology, Graduate School of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo, Hokkaido 060-0810, Japan;3. Genomic Resources and Environmental Adaptation Research Group, Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), Toyohira-ku, Sapporo, Hokkaido 062-8517, Japan |
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| Abstract: | The study of positronium intensity rise in long-chain alkanes shows two kinds of electron traps: the first, which are discharged at low temperature (≈200 K); the other, which remain populated up to the transition point to the rotator phase; e.g. in C30H62 they are still observed at 328 K.In the rigid phase of even-numbered alkanes o-Ps lifetime is shorter than that of odd-numbered ones, due to the difference in the width of gap between the molecular lamellae. |
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