| 355 nm激光作用下质子化丙酮-水团簇的多光子电离质谱 |
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| 引用本文： | 王仍,孔祥和,张树东,张霞.355 nm激光作用下质子化丙酮-水团簇的多光子电离质谱[J].光子学报,2007,36(6):1124-1127. |
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| 作者姓名： | 王仍 孔祥和 张树东 张霞 |
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| 作者单位： | 1. 曲阜师范大学,物理工程学院,山东,曲阜,273165
2. 曲阜师范大学,激光研究所,山东,曲阜,273165 |
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| 基金项目： | 曲阜师范大学博士科研启动基金资助 |
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| 摘 要： | 为研究由氢键形成的超分子体系内的质子化构型,利用355 nm多光子电离(MPI)技术结合飞行时间质谱（TOF-MS）得到丙酮和水的系列团簇质谱.实验观察到的主要产物是质子化的丙酮水团簇.其团簇构型归纳为(CH3COCH3)n(H2O)n－2H+,(CH3COCH3)n(H2O)n－1H+和(CH3COCH3)n(H2O)nH+.利用Gaussian 98程序优化了团簇的离子态构型,通过频率验证了构型的稳定性,并给出了相关能量和零点修正能.
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| 关 键 词： | 多光子电离质谱 丙酮-水团簇 质子化 |
| 文章编号： | 1004-4213（2007）06-1124-4 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005-12-31 |
Multiphoton Ionization-Mass Spectrom of Protonated Acetone-Water Clusters At 355 nm |
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| WANG Reng,KONG Xiang-he,ZHANG Shu-dong,ZHANG Xia.Multiphoton Ionization-Mass Spectrom of Protonated Acetone-Water Clusters At 355 nm[J].Acta Photonica Sinica,2007,36(6):1124-1127. |
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| Authors: | WANG Reng KONG Xiang-he ZHANG Shu-dong ZHANG Xia |
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| Institution: | 1. Department of Physics ,Qufu Normal University ,Qufu 273165 ,China;2. Institute of Laser Research ,Qufu Normal University ,Qufu 273165 ,China |
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| Abstract: | Acetone-water clusters were ionized with 355 nm laser and cluster ions were detected by a time-of-flight mass spectrometer.Three series protonated cluster ions such as (CH3COCH3)n-(H2O)n-2H ,(CH3COCH3)n-(H2O)n-1H and (CH3COCH3)n-(H2O)nH were observed. Ab-initio calculation was used to study the equilibrium structures of (CH3COCH3)n-(H2O)n-2H .The electric charge distributing of the (CH3COCH3)4(H2O)2H was given.It was the (H2O)nH which determined the whole configuration of the (CH3COCH3)n-2-(H2O)nH .Besides,the energy and zero point energy of the clusters were even given. |
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| Keywords: | Multiphoton Ionization Mass Spectrum (MPI-MS) Acetone-water cluster Protonated |
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