Related Experiment Video
Updated: May 14, 2026

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
Observation and analysis of abnormal absorption signals in laser flash photolysis measurement
Wen Li1, Yao-feng Yuan, Xiao-lin Li
1Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China. liwen@mail.ipc.ac.cn
Abstract:
In order to investigate a noise-like signal appearing in dynamic mode measurement during laser flash photolysis experiments, five compounds were chosen which show this abnormal phenomenon. The reproducibility of this phenomenon was done repeatedly, indicating that it originates from each molecular structural property. Also their two regulation pattern or features were found by our analysis. One is a U-shaped curve of main frequency intensity with time and it seems to be directly related to the concentration of the T(1) excited state. The other is a high damping oscillation curve of the frequency shift with time and this curve seems to be indicating an energy transportation process from light into chemical energy. Finally, a possible origin of hydrogen nuclear optical resonance was proposed for the abnormal signal.
More Related Videos
08:50Total Internal Reflection Absorption Spectroscopy (TIRAS) for the Detection of Solvated Electrons at a Plasma-liquid Interface
Published on: January 24, 2018
05:56Spot Variation Fluorescence Correlation Spectroscopy for Analysis of Molecular Diffusion at the Plasma Membrane of Living Cells
Published on: November 12, 2020
Related Concept Videos
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Atomic Fluorescence Spectroscopy
Flame Photometry: Lab
Atomic Absorption Spectroscopy: Overview
When irradiated by EMR of a particular wavelength, these...