| Si_xN~±_y团簇离子的形成和稳定性研究 |
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| 引用本文： | 巨新,魏坤,施朝淑,唐孝威,张南,高振,孔繁敖,朱起鹤. Si_xN~±_y团簇离子的形成和稳定性研究[J]. 中国激光, 1994, 21(12): 962-966 |
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| 作者姓名： | 巨新 魏坤 施朝淑 唐孝威 张南 高振 孔繁敖 朱起鹤 |
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| 作者单位： | 中国科学技术大学，中国科学院高能物理研究所，中国科学院化学研究所 |
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| 摘 要： | 结合ＤＶ－Ｘα方法的理论计算结果，对激光蒸发方法产生的ＳｉｘＮ团簇离子的形成和稳定性进行了细致的研究。发现上述四簇离子可能以ＳｉＮ３或ＳｉＮ４作为初始单元，较大的团簇离子可由某种单元与另一质谱上较稳定的复合分子组成。质谱强度变化的规律表明：若团簇离子质量是Ｓｉ原子量的倍数时，呈现极大值，此时，团簇离子包含偶数个Ｎ原子。其奇偶性是由初始单元强度差异引起的。
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| 关 键 词： | 团簇，激光蒸发，构型 |
| 收稿时间： | 1994-01-17 |
Study of the Formation and Stability of SixN±yCluster Ions |
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| Ju Xin,Wei Kun,Shi Chaoshu, Tang Xiaowei. Study of the Formation and Stability of SixN±yCluster Ions[J]. Chinese Journal of Lasers, 1994, 21(12): 962-966 |
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| Authors: | Ju Xin Wei Kun Shi Chaoshu Tang Xiaowei |
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| Abstract: | Combined with a DV-Xa calculation,the formation and stability of Six cluster ions produced by laser ablation technique were investigated.It was observed in the mass spectrum that larger cluster ions were composed of one of the basic units,SiN3or SiN,,and other stable cluster ions.The mass spectrum shows that the maxima correspond to these cluster ions whose masses are times of the atomic mass of St.The odd-even variation related to the number of N atom is believed to be caused by the differences of intensity of the intensity of the basic units. |
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| Keywords: | cluster laser ablation morphology |
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