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Determination of optodynamic excitation mechanism following laser pulse absorption in CuSO4 solution
Horvat, Darja (Author), Terzić, Mira (Author), Možina, Janez (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-VO4SPK4V This link opens in a new window

Abstract
Optodynamic phenomena in aqueous solutions of CuSO4 were experimentally investigated for two different concentrations (0.025 M and 0.05 M). The solutions were irradiated with a pulsed Nd:YAG laser operating at 1064 nm, with pulse energy varied from 180 to 760 mJ. Optodynamic sources were formed at different distances from the liquid - air boundary inside the liquid and in the air. The propagating optodynamic waves were detected with a laser beam deflection probe inside the liquid. The possibility of identification of different optodynamic excitation mechanisms was investigated. Spatial nonhomogenity of the laser beam profile influences the absorption process at and near the liquid - air boundary. As a consequence of this influence the shape and characteristics of the optodynamic source were considered. It was found out that optodynamic amplitude analysis can be used to assess the light power density at which the transition from linear to nonlinear excitation regime occurs.

Language:English
Keywords:optodinamika, optodinamski pojavi, optoakustična spektroskopija, optodinamski valovi, laserji Nd:YAG, vzbujevalni mehanizmi, optodynamics, optodynamic generation mechanism, ultrasonic waveform, photoacoustic spectroscopy
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2006
Publisher:Slovensko kemijsko društvo
Number of pages:str. 191-196
Numbering:Letn. 53, št. 2
UDC:535.374:534:543
ISSN on article:1318-0207
COBISS.SI-ID:9413147 Link is opened in a new window
Views:630
Downloads:318
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Record is a part of a journal

Title:Acta chimica slovenica
Shortened title:Acta chim. slov.
Publisher:Slovensko kemijsko društvo, =Slovenian Chemical Society
ISSN:1318-0207
COBISS.SI-ID:14086149 This link opens in a new window

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