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excimer

/ek-suh-mer/US // ˈɛk sə mər //UK // (ˈɛkˌsaɪmə) //

准分子,准将,准妈妈

Definitions

n.名词 noun
  1. 1

    Chemistry.

    • : a molecular complex of two, usually identical, molecules that is stable only when one of them is in an excited state.

Examples

  • Another set of doughnuts revealed the presence of vortex beams of helium excimers, molecules created when a helium atom in an excited, or energized, state pairs up with another helium atom.