高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2001年
3期
482-484
,共3页
傅正文%曾宪康%张谊华%秦启宗%陈宏%黄荣彬%郑兰荪
傅正文%曾憲康%張誼華%秦啟宗%陳宏%黃榮彬%鄭蘭蓀
부정문%증헌강%장의화%진계종%진굉%황영빈%정란손
超金属分子%飞行时间质谱%激光等离子体
超金屬分子%飛行時間質譜%激光等離子體
초금속분자%비행시간질보%격광등리자체
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 LiZ nO+.
