| 离子成像实验图像处理引入的近似及修正 |
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| 引用本文： | 张竞辉,许继军,解金春,沙国河. 离子成像实验图像处理引入的近似及修正[J]. 化学物理学报(中文版), 2002, 15(5): 341-345. DOI: 10.1088/1674-0068/15/5/341-345 |
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| 作者姓名： | 张竞辉 许继军 解金春 沙国河 |
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| 作者单位： | 中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连,116023 |
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| 摘 要： | 针对传统离子成像实验中使用的图像分析算法中引入的近似,结合标准的离子成像装置模型提出了一种修正方法,计算结果表明,这种方法可以很大程度上改善所得到的三维剖面分布的精确度.利用这一方法重新计算了碘原子在278.50 nm处(2+1)REMPI产生的光电子的平动能分布,指出其中存在着两个不同的离子态(3P0,3P1)跃迁,同时得到了达3.9%的相对能量分辨率.
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| 关 键 词： | 光电离 光电子成像 反阿贝尔变换 |
Abel Inversion in Ion Imaging: Approximation and Its Revision |
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| Zhang Jinghui,Xu Jijun,Xie Jinchun,Sha Guohe. Abel Inversion in Ion Imaging: Approximation and Its Revision[J]. Chinese Journal of Chemical Physics, 2002, 15(5): 341-345. DOI: 10.1088/1674-0068/15/5/341-345 |
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| Authors: | Zhang Jinghui Xu Jijun Xie Jinchun Sha Guohe |
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| Affiliation: | {{each article.affiliations aff i}} {{if aff.addressEn && aff.addressEn != ""}} {{if aff.label && aff.label != "" && article.affiliations.length != 1}}{{@ aff.label}}.{{/if}}{{@ aff.addressEn}}{{/if}} {{/each}} |
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| Abstract: | We present a new iterative method for the analysis of data obtained by imaging techniques. This method is based on a detailed investigation for the motion of charged particles in ion imaging apparatus. The conventional inversion approach is a good approximation only in the case of small kinetic energies of the charged particles. The iterative method has been employed to study the photoelectron spectrum of iodine atoms via intermediate state 3P0 by using 278.5nm laser. We got a relative energy resolution of 3.9% and found the photoionization involves two different passways corresponding to 3P0→3P0 and 3P0→3P1 respectively. |
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| Keywords: | Photoionization Photoelectron Imaging Abel Inversion |
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