73 7 2017 pp. 447 454 447 * 43.25.Yw; 78.60.Mq 1. 1L 20 cc [1] Sonoluminescence: Light emission from acoustic cavitation bubble. Pak-Kon Choi (Department of Physics, Meiji University, Kawasaki, 214 8571) e-mail: pkchoi@meiji. ac.jp OH 2. 12πγR 0 P 0 3 M =4πR0ρ 3 R 0 γ P 0 1 ρ f 0 f 0 = 1 3γP 0 (1) 2πR 0 ρ [2] f 0 khz R 0 mm f 0 R 0 3 (2) 0.1 mm f 0 =30kHz
448 73 7 2017 90 (1) 1 (1) T max P max ( ) 3(γ 1) R0 T max = T 0 (3) R min ( ) 3γ R0 P max = P g0 (4) R min T 0 P g0 R 0, R min γ 5/3 7/5 T max 20,000 30,000 K P max 1,000 1 µm 3 [3] M 1 2 MṘ2 Ṙ P V Rayleigh Plesset [ ( R R+ 2Ṙ2 3 = 1 P 0 + 2σ )( ) 3γ R0 ρ R 0 R ] 2σ R 4µṘ R P 0+p(t) (5) σ µ p(t) (5) Keller Miksis [4] 1 24 khz 5 µm 0.8 1.0 1.2 1.4 4 T 1 1.4 50 µm 0.6 µm (1) (2) (3) 1.4 90 90 Kozuka [5]
449 1 24 khz 4 0.8 1.4 1 (5) (3), (4) H 2 O OH + H (6) OH H H 2 O 2 H 2 1% 40 K 10,000 K SBSL 1930 [6] 100 SBSL [7] (6) OH OH 3. MBSL MBSL SBSL 1990 [8] 1962 Yoshioka SBSL Gaitan [8] [9] SBSL MBSL 2 MBSL 500 ml
450 73 7 2017 2 151 khz 20 W 151 khz 20 W MBSL 2 2 1/2 2 50 µm 1m/s 3 84 khz 9W 64,000 3 [10] 3 84 khz 9W 64,000 fps 1 2 Bjerknes 3 15 W 2 1 SL SBSL MBSL 4 MBSL 135 khz 2W
451 4 Ar 5 µs/div SL 135 khz 2W 1 SBSL 60 350 ps [9] MBSL SBSL [11] 4. MBSL 5 138 khz 8.9 W Continuum 310 nm 2 SBSL MBSL SBSL 310 nm (6) OH 5 2M MBSL 138 khz 8.9 W OH 2M OH Na D 560 nm D 1 2 D 1 =589.6 nm, D 2 =590.0 nm Na [12] graphical abstract Na K [13] 1 Na Na + Na 10 Na Na 2 D 1
452 73 7 2017 D 2 K 766.5 nm 2 P 3/2 2 S 1/2 769.9 nm 2 P 1/2 2 S 1/2 6 135 khz KCl [14] (a) Xe (b) Ar (c) He KCl K Xe, Ar K He 6 K K He 3,480±280 K 585 ± 120 atm Xe Ar 6 Ar 6(a), (b) 2 4 SDS Na + / 6 148 khz KCl K (a)xe (b)ar (c)he KCl Reprinted with permission from ref. [14]. Copyright 2012 by the American Chemical Society. Na + SDS Na + 1/1,000 SDS Na 7 a Ar 10 mm SDS Na 148 khz 30 7 3 (a) 3 6 (b) 6 9 (c) 27 30 (d) e D 7 I II 2
453 II Xe 1MHz I I II [15] I I 7 Ar SDS SL 148 khz 9.1 W 3 a d 0 3 3 6 6 9 27 30 e NaCl b I II Reprinted with permission from ref. [12]. Copyright 2015 by Elsevier Publishing. I Na Na + SDS Na Na Ar Na-Ar van der Waals Exiplex II van der Waals 5 Na van der Waals II B X I CO CH 4 I 5. MBSL 250 nm [16] [17] [18, 19] [ 1 ] P. S. Wilson and R. A. Roy, An audible demonstration of the speed of sound in bubbly liquids, Am. J. Phys., 76, 975 981 (2008). [ 2 ] W. Lauterborn and T. Kurz, Physics of bubble oscillations, Rep. Prog. Phys., 73, 106501 (88 pp.) (2010). [3] R. E. Apfel, Methods of Experimental Physics, Vol. 19, Ultrasonics (Academic Press, New York, 1981), p. 373. [ 4 ] J. B. Keller and M. Miksis, Bubble oscillations of large amplitude, J. Acoust. Soc. Am., 68, 628 633 (1980). [ 5 ] T. Kozuka, S. Hatanaka, K. Yasui, T. Tuziuti
454 73 7 2017 and H. Mitome, Simultaneous observation of motion and size of a sonoluminescing bubble, Jpn. J. Appl. Phys., 41, 3248 3249 (2002). [ 6 ] F. R. Young, Sonoluminescence (CRC Press, Boca Raton, 2005). [ 7 ] D. L. Flannigan and K. S. Suslick, Plasma formation and temperature measurement during singlebubble cavitation, Nature, 434, 52 55 (2005). [ 8 ] D. F. Gaitan, L. A. Crum, C. C. Church and R. A. Roy, Sonoluminescence and bubble dynamics for a single, stable, cavitation bubble, J. Acoust. Soc. Am., 91, 3166 3183 (1992). [ 9 ] M. P. Brenner, S. Hilgenfeldt and D. Lohse, Single-bubble sonoluminescence, Rev. Mod. Phys., 74, 425 484 (2002). [10] H.-B. Lee and P.-K. Choi, Acoustic power dependences of sonoluminescence and bubble dynamics, Ultrason. Sonochem., 21, 203 2043 (2014). [11],,, IEICE Tech. Rep., US2016-117, pp. 223 226 (2017). [12] Y. Hayashi and P.-K. Choi, Two components of Na emission in sonoluminescence spectrum from surfactant aqueous solutions, Ultrason. Sonochem., 23, 333 338 (2015). [13] P.-K. Choi, Sonoluminescence of inorganic ions in aqueous solutions, in Theoretical and Experimental Sonochemistry Involving Inorganic Systems, Pankaj and M. Ashokkumar, Eds. (Springer, Heidelberg, 2010), p. 337. [14] Y. Hayashi and P.-K. Choi, Effects of rare-gases on sonoluminescence spectrum of K atom, J. Phys. Chem. B, 116, 7891 7897 (2012). [15] R. Nakajima, Y. Hayashi and P.-K. Choi, Mechanism of two types of Na emission observed in sonoluminescence, Jpn. J. Appl. Phys., 54, 07HE02 (2015). [16] Y. Toriyabe, E. Yoshida, J. Kasagi and M. Fukuhara, Acceleration of the d + d reaction in metal lithium acoustic cavitation with deuteron bombardment from 30 to 70 kev, Phys. Rev. C, 85, 054620 (2012). [17] F. Cardone, G. Cherubini and A. Petrucci, Piezonuclear neutrons, Phys. Lett. A, 373, 862 866 (2009). [18],,,,,, 2012. [19] P.-K. Choi, Sonoluminescence and the acoustic cavitation, Jpn. J. Appl. Phys. (2017) in printing.