Open AccessИмпульсная активация вскипания перегретой жидкости лазерным излучением
Author(s) -
А.Л. Гурашкин,
А.А. Старостин,
П.В. Скрипов
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.12.49529.18245
Subject(s) - boiling , pentane , superheating , fiber , chemistry , superheated steam , boiling point , liquid nitrogen , materials science , thermodynamics , analytical chemistry (journal) , chromatography , organic chemistry , physics
On the example of n-pentane superheated on 81 K with respect to the liquid-vapor equilibrium temperature, the possibility of local activation of liquid boiling-up by a laser pulse at the end of a single-mode fiber is shown. An activation threshold for the radiation intensity at the end of the fiber has been revealed. The activation threshold value depends on the state of the fiber end, and the boiling-up processes are likely to develop at the interface. Like a spontaneous boiling-up process, a stepwise propagating change in the refractive index of the liquid is observed in the course of activation. The conclusion is drawn about the uniformity of the recorded processes at spontaneous and activated boiling-up of n-pentane.