Ступінь димеризації, ефективна поляризовність молекул і теплоємність насиченої водяної пари

Автор(и)

  • M. P. Malomuzh I.I. Mechnikov National University of Odesa
  • V. M. Makhlaichuk I.I. Mechnikov National University of Odesa

DOI:

https://doi.org/10.15407/ujpe63.2.121

Ключові слова:

насичена водяна пара, ефективна поляризовнiсть, теплоємнiсть при постiйному об’ємi

Анотація

Робота присвячена дослiдженню властивостей водяної пари. Основна увага зосереджена на фiзичнiй природi її ефективної поляризовностi та теплоємностi при постiйному об’ємi. Встановлено, що специфiчнi температурнi залежностi цих характеристик зумовленi головним чином тепловими коливаннями димерiв води. У зв’язку з цим визначено нормальнi координати для коливань димера. Детально дослiдженi коливання дипольних моментiв димерiв та розглянуто їх внесок у дiелектричну проникнiсть водяної пари. Також враховано внесок мiжчастинкової взаємодiї до теплоємностi водяної пари. Аналiзуючи поведiнку ефективної поляризовностi та теплоємностi, визначено температурну залежнiсть концентрацiї димерiв вздовж лiнiї спiвiснування рiдина-пара. Помiтна димеризацiя в насиченiй водянiй парi вiдбувається лише за температури T/Tc > 0,8 (де Tc – критична температура). Важливо зазначити, що успiшне вiдтворення ефективної поляризовностi та теплоємностi може служити хорошим випробуванням для правильного опису концентрацiї димерiв в рiзних пiдходах.

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Опубліковано

2018-03-10

Як цитувати

Malomuzh, M. P., & Makhlaichuk, V. M. (2018). Ступінь димеризації, ефективна поляризовність молекул і теплоємність насиченої водяної пари. Український фізичний журнал, 63(2), 121. https://doi.org/10.15407/ujpe63.2.121

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Розділ

Фізика рідин та рідинних систем, біофізика і медична фізика