Quasi-Positronium in Polyethylene Terephthalate - Temperature and Magnetic Quenching Effects |
| G. Consolati and F. Quasso Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, 32-20133 Milano, Italy |
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| The features of the positron-electron bound system (quasi-positronium, qPs) in the semicrystalline polymer polyethylene terephthalate (mylar) are obtained while studying the dependence of the ortho-qPs lifetime on temperature in the range of 25-105°C, in the presence as well as in the absence of magnetic fields. In particular, the "anomalous" effect, previously discovered by Bisi et al. at room temperature, is maintained at higher temperature. |
| DOI: 10.12693/APhysPolA.83.273 PACS numbers: 71.60.+z, 78.70.Bj |