| CCl2自由基被无机小分子猝灭的速率常数 |
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| 引用本文： | 高义德,刘云珍,冉琴,陈从香.CCl2自由基被无机小分子猝灭的速率常数[J].物理化学学报,2001,17(10):944-947. |
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| 作者姓名： | 高义德 刘云珍 冉琴 陈从香 |
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| 作者单位： | Open Laboratory of Bond Selective Chemistry,Department of Chemical physics,University of Science and Technology of China ,Hefei 230026 |
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| 基金项目： | 国家自然科学基金(299730380和10032050)及国家重点基础研究专项基金(G1999075304)资助项目. |
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| 摘 要： | 对CCl4/Ar混合气体脉冲直流高压放电产生CCl2自由基,用541.52 nm激光将电子基态CCl2激励到A 1B1(0,4,0)振动能级上. 通过检测激发态CCl2时间分辨荧光信号,测得室温下CCl2(A 1B1和a 3B1)被O2、N2、NO、 CO2、 CS2、H2O、SO2,和SF6分子猝灭的实验结果.用我们提出的三能级模型分析处理实验数据,获得了CCl2(A 1B1)态和CCl2(a 3B1)态的碰撞猝灭速率常数kA和ka值.
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| 关 键 词： | CCl2(A 1B1 a 3B1) 动力学 猝灭速率常数 三能级模型 |
| 收稿时间： | 2001-03-20 |
| 修稿时间： | 2001年3月20日 |
A1B1 and a3B1
) by Some Inorganic Molecules |
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| Gao Yi-De,Liu Yun-Zhen,Ran Qin,Chen Cong-Xiang.A1B1 and a3B1
) by Some Inorganic Molecules[J].Acta Physico-Chimica Sinica,2001,17(10):944-947. |
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| Authors: | Gao Yi-De Liu Yun-Zhen Ran Qin Chen Cong-Xiang |
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| Institution: | Open Laboratory of Bond Selective Chemistry,Department of Chemical physics,University of Science and Technology of China ,Hefei 230026 |
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| Abstract: | CCl2 free radicals were produced by dc discharge of CCl4(in Ar). Ground electronic state CCl2 radical was electronically excited to A 1B1 (0,4,0) state with Nd:YAG laser pumped dye laser at 541.52 nm. Experimental quenching data of CCl2 (A 1B1 and a 3B1) by O2,N2,NO,CO2,CS2,H2O,SO2 and SF6 were obtained by observing time resolved fluorescence from the excited CCl2 radicals,which showed a superposition of two exponential decay components. The state resolved rate constants kA and ka were first time acquired by analyzing and dealing with these data by using a three level model proposed by us. |
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| Keywords: | 2(A 1B1 a 3B 1)' ') CCl2(A 1B1" target="_blank">">CCl2(A 1B1 a 3B 1) Kinetics Quenching rate constant Three-level model |
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