| 原子分子真空紫外光吸收和光电离绝对截面的精确测量 |
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| 引用本文： | 刘付轶,俞书勤.原子分子真空紫外光吸收和光电离绝对截面的精确测量[J].光学学报,1998,18(12):601-1605. |
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| 作者姓名： | 刘付轶 俞书勤 |
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| 作者单位： | 中国科学技术大学国家同步辐射实验室，中国科学技术大学化学物理系 |
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| 摘 要： | 介绍了一种精确测量原子分子真空紫外光吸收和光电离绝对截面的实验方法。该方法的主要特点是使用圆筒形多级电极，有效地收集光电离产生的电子和离子，并利用高通量的同步辐射作光源，精确地测量分子（原子）的绝对光吸收、光电离和光离解截面，以及光电离量子产率和光学振子强度分布等。利用该方法获得了Ｘｅ原子和Ｎ２分子的一些实验结果。
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| 关 键 词： | 多电极光电离室，真空紫外，光吸收截面，光电离截面 |
| 收稿时间： | 1997/8/11 |
Accurate Measurements of Absolute Photoabsorption and Photoionization Cross Sections of Atoms and Molecules in VUV Region |
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| Liu Fuyi Sheng Liusi Yu Shuqin Zhang Yunwu ,National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei ,Chemical Physics.Accurate Measurements of Absolute Photoabsorption and Photoionization Cross Sections of Atoms and Molecules in VUV Region[J].Acta Optica Sinica,1998,18(12):601-1605. |
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| Authors: | Liu Fuyi Sheng Liusi Yu Shuqin Zhang Yunwu National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Chemical Physics |
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| Institution: | Liu Fuyi 1) Sheng Liusi 1) Yu Shuqin 2) Zhang Yunwu 1) 1),National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230026 2),Chemical Physics Department,University of Science and Techno |
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| Abstract: | A method of accurate measuring the absolute photoabsorption and photoionization cross sections has been introduced. The home made experimental apparatus of VUV photoionization chamber with cylinderical multielectrode has been emphasized. It can accurately measure the absolute photoabsorption, photoionization and photodissociation cross sections, photoionization quantum yields and optical oscillator strength distributions of atoms and molecules. The experimental results of Xe and N 2 are given. |
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| Keywords: | multielectrode ion chamber VUV photoabsorption cross section photoionization cross section |
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