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Presented are the following reports on stimulated and spontaneous scattering: Sound speeds and laser induced damage in polystyrene; Forward stimulated thermal Rayleigh scattering; Frequency shifts in stimulated Rayleigh wing scattering; Hypersound speeds in sulfur hexafluoride; Measurement of the mutual diffusion constant of hydrogen in methane by means of spontaneous light scattering.
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OAC Review Index, J. A. Cuthbertson, S. Waterman, A. R. Mitchell, R. M. Lewis, W. E. Hare, E. C. Foreman, G. A. Elliott, G. A. Williams, W. A. Rowlands, B. W. Morton, C. M. Lee, S. E. Keiller, A. Fulton, G. H. Edwards, A. H. Cowan, A. L. Watt, T. Stoddart, H. E. Stevenson, R. H. Sibbit, C. W. Riley, N. S. Anderson, H. J. Maybee, D. C. McArthur, J. A. MacAdam, L. C. Long, C. W. Leggatt, W. J. B. Kay, A. G. S. Du Toit, H. R. Davis, A. T. Brown, W. T. Ziegler, W. Y. Wood, J. W. Wadsworth, J. H. Kezar, E. B. Goudie, K. W. Crews, R. Atkin, S. White, H. G. Whillans, H. A. Smallfield, R. J. Quirie, J. L. Pegg, G. S. Fraser, G. I. Arnold, M. D. MacCharles, P. H. Ferguson, P. D. Vahey, D. G. Townsend, J. A. Steele, H. G. Oldfield, R. Murray, W. D. Morton, H. J. Light, B. P. Gandier, P. C. Connor, T. A. Wiggins, R. G. Sutton, J. C. Roger, H. Richardson, C. M. Nixon, W. B. McCullen, H. M. Campbell, H. J. Cudmore, W. Bissett, W. J. Baird, W. H. Sproule, M. Malyon, A. B. Macdonald, J. I. Way, J. R. Sweeney, E. J. Quail, R. W. Oliver, F. C. Odell, A. H. Musgrave, E. G. Minielly, A. B. Jackson, W. A. De Long, A. P. Clark, C. A. Campbell· 1919
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A preliminary study has been conducted to investigate the effects of spot size on the laser induced damage threshold in thin films. Damage was produced by the interference fringes of two beams from a frequency-doubled Nd-YAG laser with a nearly Gaussian spatial profile. Fringes of spacing from 5 to 125?m were used on ZnS, ZrO2 and ThF4/ZnS films. The damage threshold and morphology were observed and are reported.