重离子物理研究所团簇研究进展
Study of Cluster in Institue of Heavy Ion Physics
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摘要: 对北京大学重离子物理研究所进行的团簇产生设备的研制、团簇的产生及其性质的研究进行描述．利用自行研制的一台气体载带溅射原子经液氮冷凝的团簇产生设备，成功地制备了多种金属及其化合物团簇，发现了支撑Ｃｕ团簇的“收缩效应”，最大收缩率为４．７％．研究了加速电压对ＩＣＢＤ薄膜的影响．发现加速电压越高，形成的Ｃｕ薄膜越光滑．当加速电压达到１８ｋＶ时，得到表面非常平滑的薄膜. By using liquid nitrogen cooling of sputtered atoms in flowing gas, a cluster machine has been designed. With the machine, kinds of metal and metalnitride clusters have been successfully generated. Cu cluster s micro structure has been studied. Micrography and electron diffraction of different size Cu clusters show:Cu clusters smaller than 8nm in diameter are amorphous,Cu tu culsters larger than 8nm in diameter are in crystal form. Lattice constant of Cu cluster is ...Abstract: By using liquid nitrogen cooling of sputtered atoms in flowing gas, a cluster machine has been designed. With the machine, kinds of metal and metalnitride clusters have been successfully generated. Cu cluster s micro structure has been studied. Micrography and electron diffraction of different size Cu clusters show:Cu clusters smaller than 8nm in diameter are amorphous,Cu tu culsters larger than 8nm in diameter are in crystal form. Lattice constant of Cu cluster is ...
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