Phase-transition radiation and the growth of a new phase

Sall, Sanford; Smirnov, A.P.

doi:10.1134/1.1259737

Cited by 12 publications

(7 citation statements)

References 3 publications

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“…Our opponents deny the possibility of such radiation, and thus, high-temperature luminescence is rejected in favour of the phonon path energy removal. Here are their arguments for a case of semiconductor melt crystallisation that is very similar to our experiments [19]: "Let us consider an excited particle near a phase-transition boundary at the supercooled melt of temperature T ≈ 1000 K. For phase-transition radiation to occur, the probability of excitation energy being converted into light emission by this particle at phase transition must be equal to or greater than the probability of the excitation energy being converted to heat. But this probability is infinitesimal.…”

Section: The Peta Radiation At Cl/sl/liblmentioning

confidence: 75%

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Sonoluminescence as the PeTa Radiation, Part Two

Tatartchenko¹

2017

OPJ

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This paper is a continuation of one published in this journal nine months ago. The two papers present a model of cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), one-bubble sonoluminescence (OBSL), and laser-induced bubble luminescence (LIBL). The basis of this model is the PeTa (Perel'manTatartchenko) effect, a nonequilibrium characteristic radiation under first-order phase transitions, especially vapour condensation. In this model, the main role is given to the liquid, where the evaporation, condensation, flash, and subsequent collapse of bubbles occur. The instantaneous vapour condensation inside the bubble is a reason for the CL/MBSL/OBSL/LIBL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They are most likely excited by a shock wave occurred during the collapse. This paper, in contrast to the previous one, presents a slightly expanded model that explains additional experimental data concerning especially the LIBL spectrum. As a result, today we are not aware of any experimental data that would contradict the PeTa model, and we continue to assert that there is no mystery to the CL/MBSL/OBSL/LIBL phenomena, as well as no reason to hope that they can be used for high-temperature chemical reactions, and even more so for a thermonuclear ones.

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Section: The Peta Radiation At Cl/sl/liblmentioning

confidence: 75%

“…paper [19]. But it is important to note that as was mentioned in paper [24], superradiance has not yet been observed in systems significantly shorter than the radiation wavelength.…”

Section: The Peta Radiation At Cl/sl/liblmentioning

confidence: 90%

Sonoluminescence as the PeTa Radiation, Part Two

Tatartchenko¹

2017

OPJ

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“…The estimation in Ref. [15] shows that for the simplest case of cubic crystal, in an ensemble including more than 10 5 particles, radiative phase transition can be realized. It confirms our assumption.…”

Section: Experimental Results Discussionmentioning

confidence: 98%

“…[15], the feasibility of radiative phase transition was considered in terms of the theory of super-radiation. The phenomenon of super-radiation is that a system of excited particles undergoes optical transition to a lower level due to their interaction with each other through the common radiation field, the transition time being much shorter than the radiative decay time of an individual particle.…”

Section: Experimental Results Discussionmentioning

confidence: 99%

Characteristic IR radiation accompanying crystallization and window of transparency for it

Tatartchenko

2008

Journal of Crystal Growth

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“…Our opponents doubt the existence of high-temperature luminescence and insist on the removal of the energy of the phase transition by means of thermo-conductivity, i.e., by phonons. Here is an example of their reasoning for a case of semiconductor melt crystallization [39]: Let us consider an excited particle near a phase-transition boundary. For phase-transition radiation to occur, the probability of excitation energy being converted into light emission by this particle at phase transition has to be equal to or greater than the probability of the excitation energy being converted to heat.…”

Section: Short History Of the Peta Effect Discoverymentioning

confidence: 99%

Sonoluminescence as the PeTa Radiation

Tatartchenko¹

2017

OPJ

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In this paper, a model of cavitational luminescence (CL) and sonoluminescence (SL) is developed. The basis of the model is the PeTa (Perel'manTatartchenko) effect-a characteristic radiation under first-order phase transitions. The main role is given to the liquid, which is where the cavitation occurs. The evaporation of the liquid and subsequent vapor condensation inside the bubble are responsible for the CL and SL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They most likely are excited by a shock wave occurred during cavitation. The model explains the main experimental data. Thus, no mystery, no plasma, no Hollywood.

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Phase-transition radiation and the growth of a new phase

Cited by 12 publications

References 3 publications

Sonoluminescence as the PeTa Radiation, Part Two

Sonoluminescence as the PeTa Radiation, Part Two

Characteristic IR radiation accompanying crystallization and window of transparency for it

Sonoluminescence as the PeTa Radiation

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