| ATOMIC AND MOLECULAR PHYSICS |
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Excitation Transfer for K2 in High-Lying States by N2 |
CUI Xiu-Hua1,2, MU Bao-Xia1,2, DAI Kang2, SHEN Yi-Fan2 |
| 1School of Science, Xi'an Jiaotong University, Xi'an 710049 2Department of Physics, Xinjiang University, Urumqi 830046 |
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| Cite this article: |
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CUI Xiu-Hua, MU Bao-Xia, DAI Kang et al 2010 Chin. Phys. Lett. 27 073401 |
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Abstract A K-N2 mixture is irradiated in a glass fluorescence cell with pulses of 710 nm radiation from an OPO laser, populated K2 (1Λg) state by two-photon absorption. The cross section for 1Λg →3Λg transfer in K2 is determined using molecular fluorescence spectrometry. The cell temperature is kept constant at 553 K. The N2 pressure is varied between 40 Pa and 400 Pa. The effects of K2-K collisions could not be neglected. These effects are subtracted out by using the results of the pure K experiment. The cross sections are (3.8±1.5)×10-15 cm2 for K2 (1Λg)+N2 → K2 (3Λg)+N2 and (8.9± 3.5)×10-15cm2 for K2 (3Λg) collisions with N2.
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| Keywords:
34.90.+q
34.50.Rk
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Received: 15 April 2010
Published: 28 June 2010
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| PACS: |
34.90.+q
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(Other topics in atomic and molecular collision processes and interactions)
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34.50.Rk
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(Laser-modified scattering and reactions)
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