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碩士 === 國立中央大學 === 化學學系 === 104 === Emission spectra following the photolysis of bromomethanes (CBr4, CHBr3, CHBr2Cl, CHBrCl2, and CH2Br2) at different ultraviolet wavelengths were recorded at ambient temperature for investigating the formation mechanisms of highly excited atomic bromine. This work i...
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ndltd-TW-104NCU050650862017-06-25T04:38:18Z http://ndltd.ncl.edu.tw/handle/25983958544369713466 none 多光子光解溴甲烷類分子產生 高激發態溴原子之研究 Zheng Jie Lin 林政傑 碩士 國立中央大學 化學學系 104 Emission spectra following the photolysis of bromomethanes (CBr4, CHBr3, CHBr2Cl, CHBrCl2, and CH2Br2) at different ultraviolet wavelengths were recorded at ambient temperature for investigating the formation mechanisms of highly excited atomic bromine. This work improved the experimental conditions to obtain better signal-to-noise ratios in the emission spectra, and several newly observed transitions of atomic bromine were found. Power dependence and pressure dependence measurements were also conducted. The results indicate that the formation mechanism of highly excited atomic bromine is a four-photon process instead of a three-photon process reported in the previous study. For these bromomethanes, the photolysis wavelength dependences were acquired and show a similar decreasing trend from 266 nm to 300 nm. This photolysis wavelength dependence is profoundly different from that of iodomethanes. Based on the reaction enthalpies and related photoelectron spectra, the most likely mechanism for the formation of highly excited bromine is a 1+3 process. 張伯琛 2016 學位論文 ; thesis 104 zh-TW |
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碩士 === 國立中央大學 === 化學學系 === 104 === Emission spectra following the photolysis of bromomethanes (CBr4, CHBr3, CHBr2Cl, CHBrCl2, and CH2Br2) at different ultraviolet wavelengths were recorded at ambient temperature for investigating the formation mechanisms of highly excited atomic bromine. This work improved the experimental conditions to obtain better signal-to-noise ratios in the emission spectra, and several newly observed transitions of atomic bromine were found. Power dependence and pressure dependence measurements were also conducted. The results indicate that the formation mechanism of highly excited atomic bromine is a four-photon process instead of a three-photon process reported in the previous study. For these bromomethanes, the photolysis wavelength dependences were acquired and show a similar decreasing trend from 266 nm to 300 nm. This photolysis wavelength dependence is profoundly different from that of iodomethanes. Based on the reaction enthalpies and related photoelectron spectra, the most likely mechanism for the formation of highly excited bromine is a 1+3 process.
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張伯琛 |
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張伯琛 Zheng Jie Lin 林政傑 |
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Zheng Jie Lin 林政傑 |
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Zheng Jie Lin 林政傑 none |
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Zheng Jie Lin |
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2016 |
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http://ndltd.ncl.edu.tw/handle/25983958544369713466 |
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