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des ondes acoustiques sont sans cessesémisescessesémises. D` es lors, la statistique Gaussienne est rétablie Cet effet, s'il a ´ eté prévu dans des travaux antérieurs, n'avait jamaisétéjamaisété observé. Il est intéressant car nous avons discuté de l'importance de l'hypothèse de statistique Gaussienne dans de nombreuses théories. 1. Plasma induced laser beam smoothing below the filamentation thre- shold M, Plasmas, vol.13, p.93104, 2006. ,
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