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Citation: Luo Jingyuan, Fang Erti, Cui Xueyi, Jin Zhaopeng, Li Xuechu, Lou Nanquan. EXPERIMENTAL STUDY OF THE DYNAMICS OF THE Sn/N₂O(O₂) REACTION IN A SUPERSONIC FREE JET[J]. Acta Physico-Chimica Sinica, ;1986, 2(02): 146-152. doi: 10.3866/PKU.WHXB19860208 shu

EXPERIMENTAL STUDY OF THE DYNAMICS OF THE Sn/N₂O(O₂) REACTION IN A SUPERSONIC FREE JET

1.
Dalian Institute of Chemical Physics, Academia Sinica

Received Date: 6 May 1985
Available Online: 15 April 1986

An experimental study of the chemiluminescent reaction of Sn with N_2O and O_2 is first performed in a supersonic flow apparatus by using the electric-arc plasma technique to generate atomic Sn vapor. The temperature and pressure in the reacton zone are 900 K and 1-10 torr, respectively. The emission spectra of SnO (a~3Σ~+-X~1Σ~+) are recorded using an optical multichannel analyzer (OMA) at different reaction pressures and the dependence of the relative vibrational population of the product SnO(a~3Σ~+), on the pressure has been presented. The vibraitional relaxation rates of the SnO (a~3Σ~+) by Ar and Ar+N_2 had been calculated as ～10~4 torr~(-1) s~(-1) by the leastsquare fit of the experimental data. The emissions from the electronically excited states, b~3Π and a~3Σ~+, in the reaction of Sn+O_2 can be explained in terms of the reactions of Sn_2+O_2 and Sn_2+O. An unusually high population of a~3Σ~+v′=1 in the reaction of Sn+O_2 is also found. The results are compared with those obtained in high-temperature-fast-flow reactor (HTFFR) and the reaction mechanism is discussed.
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通讯作者: 陈斌, bchen63@163.com

EXPERIMENTAL STUDY OF THE DYNAMICS OF THE Sn/N₂O(O₂) REACTION IN A SUPERSONIC FREE JET