| 光谱学与光谱分析 |
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| Collisional Transfer of the Cs(8S) State and Excitation of High Lying Atomic States |
| CUI Xiu-hua1,2,MU Bao-xia2,WANG Shu-ying1,2,ZHANG Gang-tai2,YUAN Qiang-hua2,DAI Kang2,SHEN Yi-fan2* |
1. School of Science, Xi’an Jiaotong University, Xi’an 710049, China
2. Department of Physics, Xinjiang University, Urumqi 830046, China |
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Abstract Using selective stepwise excitation of the cesium 8S atomic level in Cs vapor, the collisional transfer and the population of the high-lying atomic states were studied in detail. At cesium densities of 1016-1017 cm-3,the rate coefficient of excitation collision[i.e., 8S+6S→6D+6S] was measured. Measurement of fluorescence intensities as a function of Cs density yields k6D=(2.4±0.5)×10-10 cm3·s-1. The 5D state was populated by the 8S→7P→5D transitions. The energy pooling collisions 5D+5D→nL+6S (nL=9D, 11S, 7F) were also studied. The rate coefficients were measured relative to the known rate coefficient of the collision [i.e. 6P+5D→6S+7D]. The densities of 6P state were combined with measured fluorescence ratios to determine rate coefficients for EP process. The average values (in unites of 10-10 cm3·s-1) for nL=9D, 11S and 7F are 6.4±3.2，1.0±0.5 and 8.4±4.2, respectively.
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Received: 2005-09-28
Accepted: 2005-12-28
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Corresponding Authors:
SHEN Yi-fan
E-mail: shenyifan01@xju.edu.cn
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| Cite this article: |
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CUI Xiu-hua,MU Bao-xia,WANG Shu-ying, et al. Collisional Transfer of the Cs(8S) State and Excitation of High Lying Atomic States[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 647-649.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I04/647 |
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