Formation Mechanism and Emission Spectrum of AlO Radicals in Reaction of Laser-ablated Al Atom and Oxygen

Chemical Research in Chinese Universities ›› 2003, Vol. 19 ›› Issue (3): 320-323.

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Formation Mechanism and Emission Spectrum of AlO Radicals in Reaction of Laser-ablated Al Atom and Oxygen

ZHANG Shu-dong^1,2,3, LI Hai-Yang^1,2

1. Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, P. R. China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China;
3. Physics and Electronic Engineering College, Northwest Normal University, Lanzhou 730070, P. R. China

Received:2002-12-19 Online:2003-08-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20073042).

Abstract

Abstract: The emission spectrum of AlO radicals was analyzed in 440-540 nm in the reaction of laser ablated Al beam and O₂. The carrier of spectrum was assigned to Δν=0, ±1, ±2 vibrational sequences of B²Σ⁺-X²Σ⁺ transition of AlO radicals, the observed maximum vibrational quantum number was ν′=6. The rotational and vibrational temperatures of B state were estimated at 3000 and 7500 K by spectrally simulating the rovibronic population distribution. There is a strong evidence that the production of excited Al(²S) atoms is essential to the formation of excited AlO radicals.

Key words: Laser ablation, Emission spectrum, AlO, Chemiluminescence reaction

ZHANG Shu-dong, LI Hai-Yang. Formation Mechanism and Emission Spectrum of AlO Radicals in Reaction of Laser-ablated Al Atom and Oxygen[J]. Chemical Research in Chinese Universities, 2003, 19(3): 320-323.

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Formation Mechanism and Emission Spectrum of AlO Radicals in Reaction of Laser-ablated Al Atom and Oxygen

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