High-speed N2-CARS thermometry
نویسندگان
چکیده
منابع مشابه
High-Speed N2-CARS Thermometry
Using an excimer laser-pumped CARS spectrometer, single-pulse temperature measurements have been performed with a repetition rate of up to 80 Hz in a 3-dimensional, phase-matched geometry. Single-pulse temperature data measured in a furnace typically fluctuated by _+ 50 K within the temperature range 300-1300 K. The CARS spectra were analyzed by the G-matrix formalism with inclusion of cross co...
متن کاملRo-Vibrational Spectroscopy in Hybrid fs/ps-CARS for N2 Thermometry
DOI : 10.12762/2016.AL12-10 Ro-vibrational CARS spectroscopy is performed on the Q-branch of N2 in the hybrid fs/ps regime. A new optical setup has been mounted using a single laser source and a spectral filtering stage based on a volume Bragg grating and a FabryPerot etalon, in order to achieve a good enough resolution. CARS spectra are recorded in ambient air at a 1 kHz repetition rate. Howev...
متن کاملN2 CARS thermometry and O2 LIF concentration measurements in a flame under electrically induced microbuoyancy
Microgravity combustion is fundamentally characterized by the absence of buoyancy driven flows. To facilitate a large range of diagnostics on microgravity flames, it is useful to create an equivalent microbuoyant condition in an earth-based laboratory. This experiment simulates microbuoyancy using electric fields to balance local convection in a region of the flame. Previous studies used N2 coh...
متن کاملPressure, Temperature, and Density Measurements Using High-resolution N2 Cars
* Graduate Research Assistant. Student Member AIAA. † Professor. Senior Member AIAA. ‡ W. Grafton and Lillian B. Wilkins Professor. Associate Fellow AIAA. ABSTRACT Mean pressure, temperature, and density measurements have been made in a gas cell and along the centerline of an underexpanded jet using highresolution N2 CARS. This method takes advantage of the line-broadening effects and populatio...
متن کاملHybrid fs/ps CARS Spectroscopy for Single-Shot kHz-Rate Thermometry in High-Temperature Flames
This work expands on previous studies to utilize hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (fs/ps CARS) in high-temperature flames for background-free thermometry. The goal of the current work is to quantify the precision and accuracy of the temperature measurements over an expanded temperature range from 1250 – 2400 K, while also quantifying the influence of nonresona...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics B Photophysics and Laser Chemistry
سال: 1989
ISSN: 0721-7269,1432-0649
DOI: 10.1007/bf00332123