scintillator

/หŒsษชntษชหˆleษชtษ™(ษน)/

IPA: /S IH0 N T IH1 L EY0 T ER0/

noun
  1. 1

    Any substance that glows under the action of photons or other high-energy particles

Source: https://en.wiktionary.org/wiki/scintillator