An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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gamma decay
  تباهی ِ گاما  
tabâhi-ye gâmâ (#)
Fr.: désintégration gamma  

A type of → radioactivity in which some unstable atomic nuclei dissipate excess energy by a spontaneous electromagnetic process, usually accompanied by → alpha decay or → beta decay.

See also: → gamma; → decay.