Infrared spectroscopy of (CO2)N nanoparticles (30

Abstract

A report on the infrared spectroscopy of (CO2)N nanoparticles flowing in a uniform supersonic expansion was presented. The kinetic and thermodynamic parameters of the flow were determined from the rovibrational absorption lines of the monomer and from a time-of-flight experiment. The measured flow velocity and flow temperature showed that CO2 condensation was responsible for both a strong flow warming and a non-negligible flow acceleration.