P2 アルカリ土類金属溶液からのソノルミネセンス(ポスターセッション)

概要

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The spectra of multibubble sonoluminescence from CaCl_2 aqueous solution, saturated with argon or krypton, were measured at frequencies of 77kHz and 140kHz and powers of 17〜75W. MBSL of CaCl_2 has three peaks at 423, 555 and 621nm. The peak at 423nm is the electronic transition 4s4p ^1P_1-4s^2 ^1S_0 of Ca. The 423nm peak was asymmetrically broadened to red side. The peaks at 555 and 621nm are come from CaOH. The two peaks correspond to the B^2Σ-X^2Σ and A^2Π-X^2Σ systems, respectively. The 621nm peak was superimposed by 603.3 and 647.9nm peaks, which are originated from vibronic transition of A^2Π-X^2Σ system of CaOH. The spectra showed little dependence on noble gases between Ar and Kr. Relative intensity of Ca and CaOH peaks was discussed in relation to ultrasound frequency and power.
2013-10-25