Related Experiment Video
Updated: May 15, 2026

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
Published on: June 9, 2016
Atmospheric pressure acetylene detection by UV photo-fragmentation and induced C2 emission
Paul C Miles1, Bo Li, Zhongshan Li
1Combustion Research Facility, Sandia National Laboratories, P.O. Box 969, MS9053, Livermore, CA 94551-0969, USA.
Abstract:
Detection of C(2)H(2) via UV photo-fragmentation, followed by monitoring the C(2) d(3)Π(g)-a(3)Π(u) fluorescence, is explored at atmospheric pressure and at temperatures of 295 K, 600 K, and 800 K, for excitation wavelengths 210 to 240 nm using a broadband laser source (~3 cm(-1) fwhm). At the lower temperature, C(2) emissions correlate closely with C(2)H(2) Ã ← X absorption bands, and the excitation spectra suggest a higher-transition probability for the v(″)(4) = 2 and 3 states than for the v(″)(4) = 0 and 1 states. As temperature increases, the excitation spectra exhibit a higher nonresonant background.
More Related Videos
Related Concept Videos
Atomic Emission Spectroscopy: Lab
Gas Chromatography: Types of Detectors-II
Flame Photometry: Overview
Atomic Emission Spectroscopy: Instrumentation
Mass Spectrometry: Alkyne Fragmentation
Atomic Emission Spectroscopy: Overview

