Biphonon dynamics in ordered ammonium chloride

✍ Scribed by F. Vallée; G.M. Gale; C. Flytzanis

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 496 KB
• Volume: 149
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(88)80385-3

✦ Synopsis

The relaxation dynamics ofthe longitudinal lower-energy component of the ( ( v2+ u4), v3) 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,