Results from three-dimensional (3-D) electromagnetic particle simulations of AlfvCn waves generated by an electron beam in a nonrelativistic electron-positron plasma are presented. The results show that electrostatic modes are excited due to the beam instability. The bunches of the particles (electrons and positrons) caused by electrostatic waves are directly involved in the generation of AlfvC...

We report on the observation of Faraday waves in a cigar-shaped Fermi superfluid $^6$Li parametrically excited by modulating radial trap frequency. characterize phenomenon as function interaction parameter means Feshbach resonance. Starting from BEC side resonance we observe drop visibility pattern approach to unitarity, possibly due increased incompressibility system. probe excitation spectrum...

Highly efficient preparation of molecules in a specific rovibrationally excited state for gas/surface reactivity measurements is achieved in a molecular beam using tunable infrared (IR) radiation from a single mode continuous wave optical parametric oscillator (cw-OPO). We demonstrate that with appropriate focusing of the IR radiation, molecules in the molecular beam crossing the fixed frequenc...

The frequency response of a cantilever beam is strongly dependent on the fluid in which it is immersed. In a companion study, Sader @J. Appl. Phys. 84, 64, ~1998!# presented a theoretical model for the flexural vibrational response of a cantilever beam, that is immersed in a viscous fluid, and excited by an arbitrary driving force. Due to its relevance to applications of the atomic force micros...

The Electron-Beam Plasma (EBP) is generated by injecting an electron beam (EB) into a gaseous medium. The EBP composition is complex: generally it contains molecules, atoms, radicals and ions in stable and excited states, plasma electrons and injected beam electrons as well. At moderate pressures (Pm <10 kPa) the EBP is strongly nonequilibrium. It means that the function of the electron energy ...