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Correlation between Na* Emission and “Chemically Active” Acoustic Cavitation Bubbles
Author(s) -
Sunartio Devi,
Yasui Kyuichi,
Tuziuti Toru,
Kozuka Teruyuki,
Iida Yasuo,
Ashokkumar Muthupandian,
Grieser Franz
Publication year - 2007
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200700426
Subject(s) - sonoluminescence , aqueous solution , alkali metal , chemistry , excited state , ion , cavitation , sonochemistry , sodium , bubble , emission spectrum , analytical chemistry (journal) , inorganic chemistry , population , sonication , irradiation , spectral line , atomic physics , chromatography , thermodynamics , organic chemistry , parallel computing , computer science , physics , demography , astronomy , sociology , nuclear physics
The emission from electronically excited sodium atoms (Na*) from aqueous solutions containing NaCl or sodium dodecylsulfate under ultrasonic irradiation is studied. Evidence is presented that strongly suggests Na* emission arises from a population of bubbles that are sonochemically active but not producing sonoluminescence (SL). Results indicate that the Na* emission intensity is mainly dependent on the concentration of Na + ions near the bubble/solution interface. The results provide further insight into the origin of alkali metal spectral line emission from sonicated aqueous solutions containing sodium ions.