激光烧蚀与高压放电的辅助制样技术

发布时间：2018-01-05 18:01

本文关键词：激光烧蚀与高压放电的辅助制样技术　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：在分子光谱学领域,基于转动光谱学的同位素取代技术导出的分子结构的精准性是目前其它各种技术难以企及的。通过拟合和分析由分子转动光谱仪捕获的分子超精细转动能级跃迁,转动光谱学能获得出最精准的实验室分子几何结构与电子结构。这不仅能给量子计算化学提供绝对标准,还能为其提供新的挑战与机遇。激光烧蚀与高压放电的辅助制样技术是基于分子转动光谱仪的制样系统,可以用来制造空气中不稳定的分子、离子、自由基等,以便光谱仪捕获它们的超精细转动光谱,从而为大气成分遥感、太空分子探测,以及宇宙生命起源探究等领域提供具有重要的应用价值的光谱数据。本论文以分子转动光谱仪的制样系统为研究对象,围绕激光烧蚀与高压放电的辅助制样系统的关键技术展开研究。首先介绍了分子转动光谱仪制样系统部件的相关理论,其次重点研究了分子转动光谱仪的制样系统搭建,并研究了相关的真空技术、防外磁场技术、气体转动温度控制技术、提高仪器灵敏度的多脉冲自由感应衰减技术。最后介绍了使用激光烧蚀和辅助制样技术制造铜的有机化合物CuCH_3、CuCN和CuCCH的过程,并对得到的光谱数据进行分析,通过实验验证了激光烧蚀与高压放电的辅助制样系统的可行性和提高不稳定分子产量的优秀制样能力。
[Abstract]:In the field of molecular spectroscopy, isotope rotational spectroscopy instead of precise molecular structure technology is derived based on other technical difficult to match. By fitting and analysis by molecular spectroscopy of molecular rotation capture hyperfine rotational transition, rotational spectroscopy can obtain a laboratory of molecular geometry and electronic structure of the most accurate. It not only can provide absolute standards for quantum chemistry calculation, but also provides new challenges and opportunities for the laser ablation. And a high voltage discharge auxiliary technique for sample preparation is sample preparation system of molecular rotation spectrometer based on molecular manufacturing can be used to, unstable in air ions, free radicals, in order to capture the hyperfine spectrum spectrometer for them. In order to remote sensing of atmospheric composition, molecular spectroscopy provides space detection, has important application value of the universe and the origin of life research field The data in this paper. Sample preparation system of molecular rotation spectrometer as the research object, focuses on the research of key technology assisted sample preparation system with laser ablation of high voltage discharge. Firstly introduced the related theory of molecular rotation spectrometer sample preparation system components, then focus on the sample preparation system of molecular rotation spectrometer to build, and to study the vacuum technology, anti magnetic technology, gas rotational temperature control technology, improve the instrument sensitivity of multi pulse free induction decay technique. Finally introduces the use of laser ablation and auxiliary sample manufacturing technology of copper organic compounds CuCH_3, CuCN and CuCCH, and the spectral data obtained through the analysis of the feasibility of assisted sample preparation system laser ablation and high voltage discharge and improve unstable molecules to yield excellent sample preparation ability is verified by experiment.

【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O561.3;TN249

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