An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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cascade transition
  گذرش ِ پی‌شاری  
gozareš-e peyšâri
Fr.: transition en cascade  

A photon generation mechanism in an atom in which a transition initiates a series of secondary transitions from lower electronic levels.

See also: → cascade; → transition.