Analysis of sonoluminescence signal from megasonic irradiated gas-containing aqueous solutions using replaceable single-band filters

Zhenxing Han, Manish Keswani, Eric Liebscher, Mark Beck, Srini Raghavana

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A simple method to resolve the features that are characteristic of hydroxyl radicals in sonoluminescence (SL) spectra from aqueous solutions has been developed. Using a modified version of cavitation threshold (CT) cell in which single band filters were sandwiched between the UV grade fused silica window and the photomultiplier tube (PMT) in the cell, photon emission in the wavelength range of 280 to 400 nm was measured. Four different single band filters, 280-305.5 nm, 300-340 nm, 335-375 nm and 374.5-397.5 nm were used. The results for air and Ar saturated DI water are consistent with those reported in the literature and obtained using expensive spectrometers. The SL signal collected in ammonium hydroxide solutions indicated that at higher power densities the signal intensity may not be relatable to the generation rate of hydroxyl radicals in their ground state.

Original languageEnglish (US)
Pages (from-to)N3101-N3105
JournalECS Journal of Solid State Science and Technology
Volume3
Issue number1
DOIs
StatePublished - Feb 17 2014

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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