Now showing items 1-10 of 188
Energy method to calculate the density of liquids using ultrasonic reflection techniques
In this work it is introduced a new approach to calculate the density of liquids in terms of the energies of the acoustic signals. This method is compared to other methods in the time domain (peak-to-peak amplitudes) and ...
On the elastic wave equation in weakly anisotropic VTI media
(Oxford Univ PressOxfordInglaterra, 2013)
Ion-acoustic waves triggered by left-hand polarized finite-amplitude waves propagating in the beam direction
(Blackwell Publishing Ltd, 2006)
Nonlinear ion-acoustic like waves triggered by large-amplitude circularly polarized waves propagating in the direction of a proton beam are studied. The properties are strongly dependent on the nature of the large-amplitude ...
On the effects of soil properties on leak noise propagation in plastic water distribution pipes
In many countries, leaks are located in water distribution pipes by using the cross-correlation of pipe vibration measured either side of a suspected leak. However, in modern plastic pipes this can be problematic due to ...
ION-ACOUSTIC WAVES TRIGGERED BY LEFT-HAND POLARIZED FINITE-AMPLITUDE WAVES PROPAGATING IN THE BEAM DIRECTION
(WILLIAM BYRD PRESS FOR JOHN HOPKINS PRESS, 2006)
Nonlinear Electrostatic Ion-Acoustic-Like Instabilities in a System with Two Streaming Ion Components Moving in a Background Plasma
(Bentham open, 2008-11-26)
Finite amplitude Alfvén-cyclotron waves are believed to play an important role in coronal heating and nonthermal properties of velocity distribution functions. These effects are thought to be due to parametrically ...
Nonlinear ion-acoustic waves supported by an ion beam
It is shown that in a plasma composed by electrons, a proton core, and a proton beam propagating along an external magnetic field, finite amplitude left-hand polarized waves propagating backward relative to the beam direction ...
Spatial-temporally resolved high-frequency surface acoustic waves on silicon investigated by femtosecond spectroscopy
(American Institute Of Physics, 2012-06)
Various types of surface acoustic waves are generated by femtosecond pulses on bulk silicon with aluminium stripe transducers. Rayleigh and leaky longitudinal surface acoustic wave modes are detected in the time domain for ...