I. Rehberg*, S. Rasenat*, J. Fineberg, M. de la Torre Juarez*, and V. Steinberg§
Department of Nuclear Physics, Weizmann Institut, 76100
Received 6 September 1988
It is demonstrated that traveling waves lose stability with respect to standing waves under the influence of a spatially homogeneous temporal modulation in three different experimental systems. A phase diagram consistent with a recent theoretical prediction is presented.