Umklapp Annihilation of Positronium in Crystals

Author:

Hodges C. H.,McKee B. T. A.,Triftshäuser W.,Stewart A. T.

Abstract

Previous experiments with positron annihilation in single crystals of quartz have revealed an interesting series of narrow peaks on the momentum distribution of the annihilation photons. Our experiments repeat these observations and also confirm that no very long lifetime exists. We outline a simple theoretical model based upon the necessity of treating the positronium electron and the remaining electrons in the crystal as indistinguishable. The model yields results compatible with both momentum and lifetime data.

Publisher

Canadian Science Publishing

Subject

General Physics and Astronomy

Cited by 55 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. An energy-tunable positronium beam produced via photodetachment of positronium negative ions and its applications;Journal of Physics B: Atomic, Molecular and Optical Physics;2021-11-03

2. Positron annihilation lifetime spectroscopy using fast scintillators and digital electronics;Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment;2019-11

3. Increase in the positronium emission yield from polycrystalline tungsten surfaces by sodium coating;Surface Science;2015-11

4. Alec T. Stewart (1925-2014) and Positronium;Journal of Physics: Conference Series;2015-06-15

5. Experiments on positronium negative ions;Physics Reports;2014-12

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