Sonoluminescence as the PeTa Radiation, Part Three

Abstract

This paper is the third in a series published in this journal during 2017-2018. These three papers present various stages in the development of the PeTa model for phenomena of the same physical nature: cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), single-bubble sonoluminescence (SBSL), and laser-induced bubble luminescence (LIBL). The basis of this model is the PeTa (Perel'man-Tatartchenko) effect-a nonequilibrium characteristic radiation under first-order phase transitions, for instance, vapour condensation. The third iteration of this model "Vapour bubble luminescence" (VBL) is presented in this paper. The essence of this model is as follows: with a local decrease of pressure or an increase of temperature in a tiny volume of the liquid, one or several bubbles filled with vapour will appear. Subsequently, a very rapid increase in pressure or a decrease in temperature of the bubble leads to super-saturation of the vapour inside the bubble, followed by its instantaneous condensation with the emission of condensation energy (this is the PeTa effect). A sharp decrease in pressure causes the collapse of the bubble accompanied by a shock wave in the liquid. VBL model is conveniently represented on the solid-liquid-vapour phase diagram. A better understanding of the physical nature of the phenomena under consideration could help to find their useful applications. To develop this idea further, we propose a design of a cavity-free pulsed laser on the basis of CL/MBSL/SBSL. An analysis of LIBL in cryogenic liquids is also given in this paper.

Bubble Glow at Hydrothermal Vents as the <i>PeTa</i> Radiation

“…A similar effect occurs if bubbles filled with hot steam, for example from a cappuccino machine, are injected into a relatively large volume of cold water. The VBL model explains all experimental data concerning [3]. We have also proposed the design of a cavity-free pulsed laser on the basis of VBL luminescence [3].…”

“…The VBL model explains all experimental data concerning [3]. We have also proposed the design of a cavity-free pulsed laser on the basis of VBL luminescence [3]. Indeed, the vapor is in the supercooled state inside the bubble before the flash.…”

“…This is the fourth paper in a series that presents steps in the development of a Perelman-Tatartchenko (PeTa) model for similar physical phenomena: cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), single-bubble sonoluminescence (SBSL) and laser-induced bubble luminescence (LIBL). The previous three papers were published during 2017-2018 in this Journal [1] [2] [3]. The basis of the PeTa model is characteristic non-equilibrium radiation under first order phase transitions that since 2010 has been referred to as the PeTa effect [4].…”

“…Interesting peculiarities of the LIBL spectrum in water were explained. In the third paper [3], we interpreted the spectra of the LIBL in cryogenic liquids. In addition, we continued to improve our model.…”

“…We have shown that the similar physical effects under consideration (CL/MBSL/SBSL/LIBL) can be generalized as a phenomenon that we have titled "Vapour bubble luminescence" (VBL). VBL is very clearly represented in a non-equilibrium phase diagram (Figure 3 from [3]). The essence of VBL is as follows: when there is a local decrease in pressure and/or an increase of temperature in a tiny volume of the liquid occurs, one or several bubbles filled with vapour will appear.…”