Resolved rotation–vibration non-equilibrium with rotational VIPA-CARS
Abstract
Simultaneous rotational and vibrational temperatures are measured in an N2 plasma with rotational coherent anti-Stokes Raman scattering (CARS) resolved with a virtually imaged phased array (VIPA)-based spectrometer. A VIPA spectrally separates rotational transitions for each vibrational state, allowing vibrational populations to be directly measured. VIPA-CARS is shown to provide more accurate measurements of non-equilibrium temperatures than grating-resolved rotational CARS. The general characteristics, limitations, and potential uses of VIPA-CARS are discussed.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 14, 2022
- Source ID
- 10.1364/ol.474037
Entities
People
- Benjamin M. Goldberg
- Christopher J Kliewer
- Christopher Limbach
- Scott Steinmetz
- Timothy Y. Chen
Organizations
- Army Research Office
- Lawrence Livermore National Laboratory
- National Nuclear Security Administration
- Office of Science
- Sandia National Laboratories California
- Texas A&M University