Dynamic characteristics of light emission accompanying cryocondensation of nitrous oxide and ethanol

• Опубліковано в: : Физика низких температур
• Дата: 2015
• Автори: Drobyshev, A., Aldiyarov, A., Korshikov, E., Strzhemechny, Y.M.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2015
• Теми: Физические свойства криокристаллов
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/127951
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Dynamic characteristics of light emission accompanying cryocondensation of nitrous oxide and ethanol / A. Drobyshev, A. Aldiyarov, E. Korshikov, and Y.M. Strzhemechny // Физика низких температур. — 2015. — Т. 41, № 7. — С. 703-707. — Бібліогр.: 14 назв. — англ.

We report new results in the study of cryoradiation accompanying the condensation of some gas. The main
 objectives of this research are: (i) check a broader range of substances for their ability to cryoradiation; (ii) the
 study of the nature of radiation and its relaxation characteristics; (iii) the study of thermally stimulated processes
 in condensed samples. Of the compounds tested only nitrous oxide and ethanol exhibited the ability to generate
 cryoradiation during condensation from the gas phase. Separate flashes detected by a photomultiplier represent a
 superposition of a series of successive relaxation processes of individual regions, somehow related to each other.
 It is possible that such areas are crystallites containing a set of molecules of nitrous oxide/ethanol, which are in
 metastable states with different activation energies. Radiation by these molecules during the transition into the
 ground state induces successive relaxation processes of molecular groups according to their activation energy
 distributions. Nonequilibrium radiative states forming in the process of cryocondensation of nitrous oxide and
 ethanol may have different nature of the activation energy distribution and this could explain the difference in
 the character of the radiation relaxation in these substances.