Relaxation of vibrationally excited states in solid “nitrate–nitrite” binary systems


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Аннотация

The processes of molecular relaxation in the solid NaNO3–NaNO2 and KNO3–KNO2 “nitrate–nitrite” binary systems have been investigated by Raman spectroscopy. The relaxation time of the vibration ν1(A) of an NO-3 anion in the binary system is found to be shorter than that in individual nitrate. The increase in the relaxation rate is explained by the existence of an additional mechanism of relaxation of vibrationally excited states of the nitrate ion in the system. This mechanism is related to the excitation of vibration of another anion (NO-2) and generation of a lattice phonon. It has been established that this relaxation mechanism is implemented provided that the difference between the frequencies of the aforementioned vibrations correspond to the range of sufficiently high density of states in the phonon spectrum.

Авторлар туралы

A. Aliev

Amirkhanov Institute of Physics

Хат алмасуға жауапты Автор.
Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367003

I. Akhmedov

Amirkhanov Institute of Physics; Analytical Joint Use Center

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367003; Makhachkala, 367025

M. Kakagasanov

Amirkhanov Institute of Physics; Analytical Joint Use Center

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367003; Makhachkala, 367025

Z. Aliev

Amirkhanov Institute of Physics

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367003

M. Gafurov

Amirkhanov Institute of Physics; Analytical Joint Use Center

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367003; Makhachkala, 367025

K. Rabadanov

Analytical Joint Use Center

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367025

A. Amirov

Analytical Joint Use Center

Email: amilaliev@rambler.ru
Ресей, Makhachkala, 367025

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