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Which outcome occurs when a high-powered laser is utilized in laser-induced breakdown spectroscopy (LIBS) at atmospheric conditions?

A)Plasma formation excites atomic emissions
B)Photoacoustic resonance enhances signal gain
C)Raman scattering detects molecular vibrations
D)Non-linear crystals generate second harmonic

💡 Explanation

Plasma formation occurs because the laser's high energy density causes rapid heating and ionization via avalanche ionization; therefore, atomic emissions are generated from the plasma, rather than photoacoustic or Raman effects that need other mechanisms or SHG that depends highly on crystal.

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