The tcmpcraturc dcpcndcncc of the optical lmcwdth ol an impunty unbcddcd ma glassy matrn is mvcstlgted. Tbc model hamlltonnn couples the unpurity to tao-level systems (TLSs) characwristlc for the glassy state and the rLSs 10 the ocoustw phonons of the matw. It is shown that the Imcwdth dcpcnds stron
Temperature dependence of dephasing relaxation in dense media
โ Scribed by M.L. Strekalov; A.I. Burshtein
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 294 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Temperature dependence of dephasmg relaxation is studied wthin the framework of unpact theory. The temperature dependence of a lmewidth calculated by perturbation theory is non-monotonic.as T rises,, the spectral bne fist narrows.
then broadens. hlotion nmowtng of the lute IS attributed to the effect of attractton forces.
๐ SIMILAR VOLUMES
The temperature dependence of vibrational relaxation in carbon fetrachloride has been invfstigakd from nC%X the melting point to nex the boiling point. 'Ihe method of \_qontzneous B;il!ouin scrtterin, 0 hx been used to deter-mine the hypersonic frequencies and velocities 9s functions of tzmperzture.
The energy rekstion of the lowest vibrational Ieke (U = 1) of liquid oxygen in the electronic ground state aas investigated \Cthin a wide temperature range (53.4 Ii < T < 96 R). The relaation time exhibits a peak vlllue of; = 3.1 ms around 65 I< and is shorter at loxcer and higher temperatures. The