Biphonon dynamics in ordered ammonium chloride

doi:10.1016/0009-2614(88)80385-3

Chemical Physics Letters

Volume 149, Issues 5–6, 2 September 1988, Pages 572-576

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Abstract

The relaxation dynamics of the longitudinal lower-energy component of the ((ν₂ + ν₄), ν₃) polar two-phonon Fermi quadruplet in the ordered ammonium chloride crystal are investigated by coherent picosecond techniques. The results indicate that both frequency-modulation and occupation-number change play an important role in the coherent decay of this state.

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Biphonon dynamics in ordered ammonium chloride

Abstract

Chem. Phys. Letters

Chem. Phys.

Soviet Phys. Usp.

Phys. Rev. Letters

Phys. Rev. Letters