Abstract
Low-energy positron emission from tungsten moderators, placed at a electron accelerator beam stop slows down with increasing moderator temperature. Efficient positronium formation is reported on untreated and unoriented metal surfaces at higher target temperatures.
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Dahm, J., Niebling, K.D., Ley, R. et al. Temperature dependence of slow-positron production and of positronium formation on untreated surfaces. Appl. Phys. A 44, 105–106 (1987). https://doi.org/10.1007/BF00626408
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DOI: https://doi.org/10.1007/BF00626408