Garnier Nicolas, Chiffaudel Arnaud, Daviaud François
Service de Physique de l'Etat Condensé, DSM, CEA Saclay, CNRS SNC 2005, 91191 Gif-sur-Yvette, France.
Phys Rev Lett. 2002 Apr 1;88(13):134501. doi: 10.1103/PhysRevLett.88.134501. Epub 2002 Mar 13.
We report an experimental study of the secondary modulational instability of a one-dimensional nonlinear traveling wave in a long bounded channel. Two qualitatively different instability regimes involving fronts of spatiotemporal defects are linked to the convective and absolute nature of the instability. Both transitions appear to be subcritical. The spatiotemporal defects control the global mode structure.
我们报告了一项关于长有界通道中一维非线性行波的二次调制不稳定性的实验研究。涉及时空缺陷前沿的两种性质不同的不稳定状态与不稳定性的对流和绝对性质相关联。这两种转变似乎都是亚临界的。时空缺陷控制着全局模式结构。
