A New Pulsed Valve for High-Intensity Supersonic Jet

Alexander Kamasah (1) , Chamara Abeysekera (1) , Yuanyuan Shi (1) , Baptiste Joalland (1) , James M. Oldham (1) , Arthur G. Suits (1)

1 Wayne State University [Detroit]

Pulsed supersonic expansion is now a ubiquitous technique used in all laboratories interested in spectroscopic and reaction dynamics studies. The conversion of enthalpy to mass flow leads to the production of low temperature flows with well-defined kinetic energy. High speed valves are used to make short pulses allowing for high beam intensities with lower pumping requirements. Solenoid as well as piezoelectric disk valves have played a significant role but still show important shortcomings: low repetition rates, limited operational times and gas flows. To overcome these limitations, we have developed a new valve based on a high force piezo stack actuator. In this poster, we present the design of this new valve along with molecular beam characterizations obtained via DC slice ion imaging.

Domaines: Physique [physics]; Chimie

Alexander Kamasah, Chamara Abeysekera, Yuanyuan Shi, Baptiste Joalland, James M. Oldham, et al.. A New Pulsed Valve for High-Intensity Supersonic Jet. Atomic and Molecular Interactions, Gordon Research Conference, Jul 2014, Stonehill College, MA, United States. ⟨hal-01246961⟩