Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluste...Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluster ions were found: (a)[Cu(Cu2S)n]+(n=0-22), (b) [(Cu2S)n]+(n=1-18). The main photodissociation channels of the cluster ions were neutral losses of Cu2S, Cu or CuS. It is obvious that the Cu2S unit plays an important role in the formation and structure of the Cu/S cluster ions, and farthermore, the mied d10 shell eletronic configuration of copper element might be critical to the characteristic of the cluster ions.展开更多
用飞行时间质谱仪研究了激光直接溅射 Ag/Se混合样品产生的二元团簇以及团簇正离子的光解行为 ;并用串级溅射反应装置研究了 Ag和 Se正负离子产物 .在直接溅射产生的 Ag/Se二元团簇中 ,正离子主要系列是 :[(Ag2 Se) n Ag+ ],[(Ag2 Se) n...用飞行时间质谱仪研究了激光直接溅射 Ag/Se混合样品产生的二元团簇以及团簇正离子的光解行为 ;并用串级溅射反应装置研究了 Ag和 Se正负离子产物 .在直接溅射产生的 Ag/Se二元团簇中 ,正离子主要系列是 :[(Ag2 Se) n Ag+ ],[(Ag2 Se) n Ag+ 3];负离子主要系列是 :[(Ag2 Se) n Ag Se- ],[(Ag2 Se) n Ag Se- 2 ],[(Ag2 Se) n Se- ].团簇正离子的光解结果表明 ,同样条件下 Ag/Se二元团簇正离子光解比率比 Ag/S大 .在Ag和 Se样品串级溅射实验中 ,主要得到 Ag Se+ n (n=4～ 9)和 Ag Se- n (n=4～ 7)系列的产物 ,在 Ag Se+ n 系列中 ,n=4,6时丰度较大 .展开更多
文摘Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluster ions were found: (a)[Cu(Cu2S)n]+(n=0-22), (b) [(Cu2S)n]+(n=1-18). The main photodissociation channels of the cluster ions were neutral losses of Cu2S, Cu or CuS. It is obvious that the Cu2S unit plays an important role in the formation and structure of the Cu/S cluster ions, and farthermore, the mied d10 shell eletronic configuration of copper element might be critical to the characteristic of the cluster ions.
文摘用飞行时间质谱仪研究了激光直接溅射 Ag/Se混合样品产生的二元团簇以及团簇正离子的光解行为 ;并用串级溅射反应装置研究了 Ag和 Se正负离子产物 .在直接溅射产生的 Ag/Se二元团簇中 ,正离子主要系列是 :[(Ag2 Se) n Ag+ ],[(Ag2 Se) n Ag+ 3];负离子主要系列是 :[(Ag2 Se) n Ag Se- ],[(Ag2 Se) n Ag Se- 2 ],[(Ag2 Se) n Se- ].团簇正离子的光解结果表明 ,同样条件下 Ag/Se二元团簇正离子光解比率比 Ag/S大 .在Ag和 Se样品串级溅射实验中 ,主要得到 Ag Se+ n (n=4～ 9)和 Ag Se- n (n=4～ 7)系列的产物 ,在 Ag Se+ n 系列中 ,n=4,6时丰度较大 .
