Formation of hypermetallic molecule LiZnO+ from laser plasma
- 化学化工－已发表论文 
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 mus. These results suggest that the ion-molecular reaction between the ablated Lif ions and ZnO in the laser plasma should be responsible for the formation of hypermetallic LiZnO+.