By 355 nm laser ablating a composite target prepared from metallic lithium and ZnO in high vaccum, a new hypermetallic oxide LiZnO + ion, which consists of two heterometal atoms and oxygen atom, was observed by using ...By 355 nm laser ablating a composite target prepared from metallic lithium and ZnO in high vaccum, a new hypermetallic oxide LiZnO + ion, which consists of two heterometal atoms and oxygen atom, was observed by using a time of flight mass spectrometer for the first time. The time of flight positive ion mass spectra at different delay time between the accelerated electric field and laser pulse are investigated. It shows that the formation of LiOZn + depends on the delay time, and the hypervalent ion LiOZn + is observed obviously at the delay time from 7.5 to 17.5 μs. These results suggest that the ion molecular reaction between the ablated Li + ions and ZnO in the laser plasma should be responsible for the formation of hypermetallic LiZnO +.展开更多
文摘By 355 nm laser ablating a composite target prepared from metallic lithium and ZnO in high vaccum, a new hypermetallic oxide LiZnO + ion, which consists of two heterometal atoms and oxygen atom, was observed by using a time of flight mass spectrometer for the first time. The time of flight positive ion mass spectra at different delay time between the accelerated electric field and laser pulse are investigated. It shows that the formation of LiOZn + depends on the delay time, and the hypervalent ion LiOZn + is observed obviously at the delay time from 7.5 to 17.5 μs. These results suggest that the ion molecular reaction between the ablated Li + ions and ZnO in the laser plasma should be responsible for the formation of hypermetallic LiZnO +.
