Relaxation kinetics of the sine-Gordon breather mode in 4-methyl-pyridine crystal at low temperature

✍ Scribed by F. Fillaux; C.J. Carlile; J.C. Cook; A. Heidemann; G.J. Kearley; S. Ikeda; A. Inaba

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 192 KB
• Volume: 213-214
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(95)00238-5

✦ Synopsis

INS spectra of 4-methyl-pyridine at 2 K with a resolution of 1.2 ~teV (IN 10 spectrometer at ILL) reveal that the bands previously observed at 510 and 468 ~teV show partially resolved components (516.3 512.4 laeV and 469.6-465.2 geV, respectively). After ~ 70 h, the intensity of the weakest component at 512.4 ~teV has almost vanished whilst that of the other component increases by a factor ~3. Neutron energy-gain and energy-loss peak intensities were measured simultaneously, as a function of time, with the LAM-80ET spectrometer at KEK. For both experiments, the kinetics are very similar.