Positronium in a-Quartz.II.Possible Effect of Damping of Positronium Quasiparticle on the Momentum Distribution

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概要

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• A part of the observed momentum spread of thermalized positronium incrystalline quartz reported in Part I could be attributed to a damping effect of thepositronium quasiparticle in the phonon field. As analogized from the case ofexcitons, the damping constartt (the width of the spectral function) for the quasi-particle state is expected to be proportional to the absolute temperature T inthe moderate and high temperature regions due to the well-known motional effectin the phonon field. Therefore if we analyze, as in Part I, the observed momentumdistribution by using a Maxwellian with effective mass M'(T), the resultantM'(T) would appear to increase with increasing temperature owing to the above-mentioned temperature dependence of the damping effect.

• 一般社団法人日本物理学会の論文
• 1979-01-15

著者

• Ikari Hiroshi

  Institute Of Physics College Of General Education University Of Tokyo

関連論文

• Positronium in a-Quartz. I. Observed Temperature Dependence of the Positronium Effective Mass and tha Probability of Annihilation from Singlet Positronium State
• Positronium in a-Quartz.II.Possible Effect of Damping of Positronium Quasiparticle on the Momentum Distribution

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