光谱学与光谱分析 |
|
|
|
|
|
Photolytic Spectroscopy of Cs2 Molecules |
LIU Jing, LEI Zhen-zhou, ZHOU Xiao-yan, DAI Kang, SHEN Yi-fan* |
Department of Physics, Xinjiang University, Urumqi 830046, China |
|
|
Abstract Populations of the n2L(nL=7P,6D)states of Cs atoms by photodissociation of Cs2 molecules through the use of the fixed frequence line 441.6 nm of a He-Cd laser radiation are produced. Combining ratios of atomic to molecular fluorescence at the Cs density range between 1 and 9×1015 cm-3, the ratios of collisional rate coefficient to predissociation rates are estimated to be 2.9×10-17 cm3 and 7.4×10-18 cm3, respectively. The branching ratios are defined as the ratios of nLJ to nLJ’ fluorescence. The ratios of the dissociation rates produced in n2L fine-structure states are 0.53 and 0.43, respectively. Fine-structure changing cross section has been measured for far wing excitation, the result is consistent with cross section obtained from other excitation of the n2L states. The cross section for excitation transfer out of the 6D doublet [i.e., Cs(6D)+Cs(6S)→states other than Cs(6D)] is 1.9×10-14 cm2.
|
Received: 2003-05-30
Accepted: 2003-12-20
|
|
Corresponding Authors:
SHEN Yi-fan
|
|
[1] Tai C, Happer W, Gupta R. Phys. Rev., 1975, A12: 736. [2] Tam A C, Yabuzaki T, Curry M et al. Phys. Rev., 1978, A17: 1862. [3] Yabuzaki T, Tam A C, Hou M et al. Opt. Commun., 1978, 24: 305. [4] Tomasi F de, Miloevic′ S, Pverkerk et al. J. Phys. B, 1997, 30, 4991. [5] Wu Z, Huennekens J. J. Chem Phys., 1984, 81(10): 4433. [6] Havey M D, Delahanty F T, Vahala L L et al. Phys. Rev., 1986, A34(4): 2758. [7] Vahala L L, Julienne P S,Havey M O. Phys. Rev.,1986,A34(3): 1856. |
[1] |
ZHANG Kai-lin1, 2, ZHOU Min3, SHI Ying-ying2, LI Shu-qi2, MA Li-fu1, ZHANG Xian-yi3*, WANG Yan1, KONG Xiang-lei2, 4*. Development and Application of an Automated Program for Photodissociation Spectroscopy Study Based on a FT ICR Mass Spectrometer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(08): 2325-2331. |
[2] |
LUO Li-qiang, SHEN Ya-ting. Advantages of X-Ray Spectrometry in Origin of Life, Earth Life on Earth and Global Climate Change[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(03): 665-674. |
[3] |
LIU Lu-yao1, ZHANG Bing-jian1,2*, YANG Hong3, ZHANG Qiong3. The Analysis of the Colored Paintings from the Yanxi Hall in the Forbidden City[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(07): 2054-2063. |
[4] |
MA Yun-yun1, WANG Yong-qiang2, MIN Qi2, CAO Shi-quan2, ZHANG Zheng-rong1, SU Mao-gen2, SUN Dui-xiong2*, DONG Chen-zhong2. Relative Spectral Intensity Response Calibration of Spectrometers Using Ar Plasma Emission Branching Ratio Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1375-1379. |
[5] |
CHEN Yue-e1, SHAO Qiu-feng2, JIA Li-xiao1. Judd-Ofelt Theory Analysis and Spectroscopic Properties of Nd3+-Doped Cadmium Aluminium Silicate Glasses[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1345-1349. |
[6] |
ZHANG Mao-lin1, WANG Li-hua2*, LI Qi-jiang1, WU Jun-ming1. EDXRF and XAFS Analysis on the White Porcelains of Ding Kiln of Successive Dynasties[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1540-1545. |
[7] |
YAN Xin1, 2, LIANG Lan-ju1,2*, ZHANG Ya-ting1, DING Xin1, YAO Jian-quan1*. Research Progress of Electromagnetic Metasurface Used for Radar Cross Section Reduction in Microwave and Terahertz Wave[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(06): 1639-1644. |
[8] |
DUAN Jun1, QIN Min1*, FANG Wu1, HU Ren-zhi1, LU Xue1, SHEN Lan-lan1, WANG Dan1, XIE Pin-hua1, 2, LIU Jian-guo1, 2, LIU Wen-qing1, 2. An Incoherent Broadband Optical Cavity Spectroscopy for Measuring Weak Absorption Cross Section of Sulfur Dioxide [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(02): 466-470. |
[9] |
ZHANG Yuan-peng1, WANG Hai-tao1*, ZHANG Lin1, YANG Liu1, GUO Xiao-di1, BAI Yun1, SUN Hao2 . Measurements of IR Absorption Across Section and Spectrum Simulation of Lewisite [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(02): 466-469. |
[10] |
ZHENG Hai-ming1, JIN Wei-jia2* . Effects of Temperature on the Ultraviolet Absorption Characteristics of SO2 [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(03): 776-779. |
[11] |
SHE Jiang-bo1, LI Dong-dong2, WANG Peng-fei1, ZHU Yong-gang1, WEI Wei3*, PENG Bo1,3* . Synthesis and Optical Properties of Nd(Ⅲ) Perfluoro-Carboxylate Complexes with 2,2’-Bipyridine[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(04): 1047-1050. |
[12] |
ZHONG Jia-qi1,2,3, YU Geng-hua1,2,3, WANG Jin1,2, ZHAN Ming-sheng1,2* . Direct Determination of Hyperfine Structures and Isotope Shifts in the 6s5d 3D→6p5d 3F Transitions of Ba I [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(01): 11-14. |
[13] |
WANG Shu-ying1,2,LIU Jing2,DAI Kang2,SHEN Yi-fan2*. Collision-Induced Vibrational Energy Transfer: K2[11Σ+u(v′=2)]+He,H2→K2[11Σ+u(v′=1,3)]+He,H2[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(09): 2305-2308. |
[14] |
SHEN Xiao-yan1,LIU Jing2,DAI Kang2,SHEN Yi-fan2* . Excitation Transfer between High-Lying States in K2 in Collisions with Ground State K and H2 Molecules [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(02): 289-292. |
[15] |
Lü Lei, WU Hong-ping, ZHANG Yan-wen, WANG Da-gui, DAI Kang, SHEN Yi-fan* . Measurement of the Cross Section in Li(2P)+H2→LiH+H Reaction [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(01): 9-12. |
|
|
|
|