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In this paper, collisional quenching rate for Li(2P) atoms with argon molecules is studied in photochemical isotope separations. In the weak laser irradiation, the absorption spectra and fluorescence emission spectra of lithium atom vapor is measured by changing the argon pressure. The quenching rate constant of (12.29±0.92)×10-18 m3·s-1 for Li(2P) atoms quenched with argon molecules have been determined. This value is much smaller than the spontaneous emission rate of Li(2P) atoms. The experimental result shows that in photochemical lithium isotope separation collisional quenching effect on the separation selectivity is very small and can be neglected.
[1] Fan F Y, Wang L J 2011 Acta Phys. Sin. 60 093203 (in Chinese) [范凤英, 王立军 2011 60 093203]
[2] Zhao L M, Wang L J 2002 Acta Phys. Sin. 51 1227 (in Chinese) [赵鹭明, 王立军 2002 51 1227]
[3] Wang L J, Yu H Y 2004 Acta Phys. Sin. 53 4151 (in Chinese) [王立军, 余慧莺 2004 53 4151]
[4] Bokhan P A, Fateev N V, Kim V A, Zakrevsky Dm E 2010 Chemical Physics 372 6
[5] Okabe H 1978 Photochemistry of Small Molecules (Wiley) pp224–226
[6] Vyazovetskii Yu V, Senchenkov A P 1998 Tech. Phys. 43 60
[7] Bokhan P A, Buchanov V V, Fateev N V, Kalugin M M, Kazaryan M A, Prokhorov A M, Zakrevskii D E 2006 Laser Isotope Separation in Atomic Vapor (Wiley-VCH) pp39–59
[8] Bokhan P A,Zakrevski D E, Fateev N V 2002 JETP Letters 75 170
[9] McGOWAN J Wm 1981 The Excited State in Chemical Physics (New York:John Wiley) pp343–344
[10] Tang K H, Wang L J 2011 Journal of Atomic and Molecular Physics 28 2 (in Chinese) [唐柯鸿, 王立军 2011 原子与分子 28 2]
[11] Demtroder W(Translated by Yan G Y, Shen S X, Xia H R) 1989 Laser Spectroscopy:basic concepts and instrumentation (Beijing: Science Press) pp29–40 (in Chinese) [戴姆特瑞德W.著, 严光耀, 沈珊雄, 夏慧荣译 1989 激光光谱学:基本概念和仪器手段(北京:科学出版社) 第29–40页]
[12] Deng B 2004 Principles, Techniques and Applications of Atomic Absorption Spectrometry (Beijing: Tsinghua University Press) pp45–47 (in Chinese) [邓勃 2004 原子吸收光谱分析的原理, 技术和应用(北京:清华大学出版社) 第45–47页]
[13] Lu Y X 2005 Laser physics (Beijing: Beijing University of Posts and Telecommunications Press) pp52–56 (in Chinese) [卢亚雄 2005 激光物理 (北京:北京邮电大学出版社) 第52–56页]
[14] Fan F Y, Wang L J, Li Q L 2012 Atomic Energy Science and Technology 46 35 (in Chinese) [范凤英, 王立军, 李钦蕾 2012 原子能科学技术 46 35]
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[1] Fan F Y, Wang L J 2011 Acta Phys. Sin. 60 093203 (in Chinese) [范凤英, 王立军 2011 60 093203]
[2] Zhao L M, Wang L J 2002 Acta Phys. Sin. 51 1227 (in Chinese) [赵鹭明, 王立军 2002 51 1227]
[3] Wang L J, Yu H Y 2004 Acta Phys. Sin. 53 4151 (in Chinese) [王立军, 余慧莺 2004 53 4151]
[4] Bokhan P A, Fateev N V, Kim V A, Zakrevsky Dm E 2010 Chemical Physics 372 6
[5] Okabe H 1978 Photochemistry of Small Molecules (Wiley) pp224–226
[6] Vyazovetskii Yu V, Senchenkov A P 1998 Tech. Phys. 43 60
[7] Bokhan P A, Buchanov V V, Fateev N V, Kalugin M M, Kazaryan M A, Prokhorov A M, Zakrevskii D E 2006 Laser Isotope Separation in Atomic Vapor (Wiley-VCH) pp39–59
[8] Bokhan P A,Zakrevski D E, Fateev N V 2002 JETP Letters 75 170
[9] McGOWAN J Wm 1981 The Excited State in Chemical Physics (New York:John Wiley) pp343–344
[10] Tang K H, Wang L J 2011 Journal of Atomic and Molecular Physics 28 2 (in Chinese) [唐柯鸿, 王立军 2011 原子与分子 28 2]
[11] Demtroder W(Translated by Yan G Y, Shen S X, Xia H R) 1989 Laser Spectroscopy:basic concepts and instrumentation (Beijing: Science Press) pp29–40 (in Chinese) [戴姆特瑞德W.著, 严光耀, 沈珊雄, 夏慧荣译 1989 激光光谱学:基本概念和仪器手段(北京:科学出版社) 第29–40页]
[12] Deng B 2004 Principles, Techniques and Applications of Atomic Absorption Spectrometry (Beijing: Tsinghua University Press) pp45–47 (in Chinese) [邓勃 2004 原子吸收光谱分析的原理, 技术和应用(北京:清华大学出版社) 第45–47页]
[13] Lu Y X 2005 Laser physics (Beijing: Beijing University of Posts and Telecommunications Press) pp52–56 (in Chinese) [卢亚雄 2005 激光物理 (北京:北京邮电大学出版社) 第52–56页]
[14] Fan F Y, Wang L J, Li Q L 2012 Atomic Energy Science and Technology 46 35 (in Chinese) [范凤英, 王立军, 李钦蕾 2012 原子能科学技术 46 35]
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