scholarly journals Some light emission features of single bubble sonoluminescence

1993 ◽  
Vol 94 (3) ◽  
pp. 1810-1810
Author(s):  
Sean M. Cordry ◽  
Lawrence A. Crum ◽  
Ronald A. Roy
Keyword(s):  
Light Emission ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence

scholarly journals ULTRASOUND BEHAVIOR OF DIFFERENT CERAMIC PIEZOELEC-TRIC TRANSDUCERS APPLIED TO SONOLUMINESCENCE

Engevista ◽  
2010 ◽  
Vol 12 (1) ◽  
Author(s):  
Ana Lucia Ferreira de Barros ◽  
Gabriel Watanabe ◽  
Álvaro Luis Martins de Almeida Nogueira ◽  
Rafael Pereira Lopes
Keyword(s):  
Aqueous Medium ◽  
Light Emission ◽  
Piezoelectric Transducers ◽  
Single Bubble ◽  
Ultrasound Wave ◽  
Restricted Domain ◽  
Applied Physics ◽  
Single Bubble Sonoluminescence

Single-bubble sonoluminescence (SBSL) is a light-emission event from a stably oscillating bubble trapped at the pressure anti-node of a standing ultrasound wave, a phenomenon that has been studied intensively for a decade [1]. Using ceramic piezoelectric transducers PZT, we are able to irradiate a liquid inside a resonator flask by means of an ultrasound wave, and we eventually capture a bubble inside a restricted domain in the aqueous medium. The trapped bubble will expand and collapse at an accelerated rate, emitting light. To capture the bubble we perform some experiments using differently sized and shaped piezoelectric transducers, and we manage to verify their capacitance and impedance behavior in our sonoluminescence circuit. Our experiments were performed at Laboratory of Experimental and Applied Physics (LaFEA) at CEFET-RJ.

INFLUENCE OF SONOCHEMISTRY ON SINGLE-BUBBLE SONOLUMINESCENCE

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1711-1714 ◽  
Author(s):  
LI YUAN ◽  
PING HE
Keyword(s):  
Water Vapor ◽  
Chemical Reactions ◽  
Electrostatic Interactions ◽  
Light Emission ◽  
Single Bubble ◽  
Evaporation And Condensation ◽  
Light Spectra ◽  
Weakly Ionized ◽  
Single Bubble Sonoluminescence ◽  
Low Degrees

Spherical oscillation of an acoustically levitated gas bubble in water was simulated numerically to elucidate the phenomenon of single-bubble sonoluminescence (SBSL). A refined hydro-chemical model was used, which took into account the processes of water vapor evaporation and condensation, mass diffusion, and chemical reactions. The numerical results show significant water vapor dissociations but rather low degrees of ionizations. A widely accepted weakly ionized gas model is then used to compute the light emission. Contrary to earlier predictions without chemical reactions, the present calculated light spectra are generally too small and the pulses are too short to fit to recent experimental results within stable SBSL range. To solve this contradiction, the electrostatic interactions of the ionized gases are included, which is shown to lower the ionization potentials of gas species in the bubble significantly.

Radiation Mechanism for a Single Bubble Sonoluminescence

1999 ◽  
Author(s):  
Jin-Seok Jeon ◽  
Ik-Jun Yang ◽  
Jung-Hee Na ◽  
Ho-Young Kwak
Keyword(s):  
Power Law ◽  
Light Emission ◽  
Visible Region ◽  
Experimental Results ◽  
Single Bubble ◽  
Spectral Radiance ◽  
Radiation Mechanism ◽  
Spectral Behavior ◽  
Partially Ionized ◽  
Single Bubble Sonoluminescence

Abstract A mechanism of light emission from a single bubble sonoluminescence (SBSL) was formulated by assuming that the source for the light emission is bremsstrahlung in partially ionized gases. Also the spectrum was measured and the observed results were compared with the calculated ones. Calculated and experimental results yield common spectral behavior in the visible region: the spectral radiance shows power-law dependence on wavelength with an exponent of −2.5. The SBSL spectrum which is characterized by the continuous one with no major peaks has been confirmed experimentally.

A Glycerol Drop in Water Boosts Single-Bubble Sonoluminescence

2003 ◽  
Vol 42 (Part 1, No. 2A) ◽  
pp. 716-720 ◽  
Author(s):  
Naser Harba ◽  
Shigeo Hayashi
Keyword(s):  
Single Bubble ◽  
Single Bubble Sonoluminescence

Dependence of single-bubble sonoluminescence on ambient pressure

Ultrasonics ◽  
2000 ◽  
Vol 38 (1-8) ◽  
pp. 566-569 ◽  
Author(s):  
M. Dan ◽  
J.D.N. Cheeke ◽  
L. Kondic
Keyword(s):  
Ambient Pressure ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence
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