| Popis: |
A water trough which has the property that there is a correlation between the frequency of drive and the position at which the soliton is created has been designed and constructed. It has a linearly increasing width and a quadratically increasing depth. This results in a trough which has a cutoff frequency for solitons which varies with position when driven parametrically. Self‐trapping localizes the soliton to the same degree as in a conventional trough with constant rectangular cross section [J. Wu, R. Keolian, and I. Rudnick, J. Acoust. Soc. Am. Suppl. 1 74, S11 (1983)]. The observed correlation between frequency and position agrees unexpectedly well with an ad hoc approximate theory. [Work supported by ONR.] |
