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Citation: He Jin-Bao, Sha Guo-He, Zhang Xiao-Yuan, Bai Ji-Ling, Zhang Cun-Hao. The Electronic Energy Transfer Between ¹²CO(A¹Π) and ¹³CO(X¹∑⁺) Studied by Rempi Spectroscopy[J]. Acta Physico-Chimica Sinica, ;1990, 6(05): 534-540. doi: 10.3866/PKU.WHXB19900506 shu

The Electronic Energy Transfer Between ¹²CO(A¹Π) and ¹³CO(X¹∑⁺) Studied by Rempi Spectroscopy

1.
Dalian Institute of Chemical Physics, Academia Sinica

Received Date: 12 April 1989
Available Online: 15 October 1990

The energy transfer processes between ~(12)CO(A~1Π) and ~(13)CO(X ~1Σ~+) were studied at 77 K by using the technique of two-color resonance enhanced multiphoton ionization spectroscopy. In a static cell with a mixture of 0.92 ~(13)CO + 0.08 ~(12)CO, ~(12)CO molecules were populated to the A state by 2-photon excitation using an UV dye laser. The ~(13)CO(A) resulted from the collision E-E energy transfer were detected by CO(A)→CO(B)→CO~+(X) 2-step ionization using a visible dye laser. The energy transfer processes were found to be very fast with total cross sections of 1.14±0.42, 0.22±0.04, 0.17±0.06 nm for ~(12)CO(A)V=1,2,3 respectively. We found that for different vibrational channels, cross section decreases with increasing energy mismatch ΔE. Another interesting result is that, for the ∧ doublet, the production of П~+ is always larger than that of П~-. The formation of an intermediate exciplex [OCCO]* is proposed to explain the experimental results.
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沈阳化工大学材料科学与工程学院沈阳 110142

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The Electronic Energy Transfer Between 12CO(A1Π) and 13CO(X1∑+) Studied by Rempi Spectroscopy

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通讯作者: 陈斌, bchen63@163.com

The Electronic Energy Transfer Between ¹²CO(A¹Π) and ¹³CO(X¹∑⁺) Studied by Rempi Spectroscopy