原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2014年
5期
769-772
,共4页
刘坤%郑涛%郭猜%杨江燕%田继挺%聂锐%马宏骥%丁富荣
劉坤%鄭濤%郭猜%楊江燕%田繼挺%聶銳%馬宏驥%丁富榮
류곤%정도%곽시%양강연%전계정%섭예%마굉기%정부영
二次离子质谱%飞行时间%碳基材料%横向歧离
二次離子質譜%飛行時間%碳基材料%橫嚮歧離
이차리자질보%비행시간%탄기재료%횡향기리
secondary ion mass spectrometry%time-of-flight%carbon material%lateral straggling
利用北京大学2×1.7 MV静电串列加速器产生的1.5 MeV Au2+和Si+束流轰击碳纳米管样品,用二次离子飞行时间质谱方法分析了二次离子成分,通过质量已知的样品的定标,确认了轰击产生的二次离子质量。分析束流轰击后的二次离子产额,发现在此能量下二次离子产额与离子在物质中射程的横向歧离表现出正相关。
利用北京大學2×1.7 MV靜電串列加速器產生的1.5 MeV Au2+和Si+束流轟擊碳納米管樣品,用二次離子飛行時間質譜方法分析瞭二次離子成分,通過質量已知的樣品的定標,確認瞭轟擊產生的二次離子質量。分析束流轟擊後的二次離子產額,髮現在此能量下二次離子產額與離子在物質中射程的橫嚮歧離錶現齣正相關。
이용북경대학2×1.7 MV정전천렬가속기산생적1.5 MeV Au2+화Si+속류굉격탄납미관양품,용이차리자비행시간질보방법분석료이차리자성분,통과질량이지적양품적정표,학인료굉격산생적이차리자질량。분석속류굉격후적이차리자산액,발현재차능량하이차리자산액여리자재물질중사정적횡향기리표현출정상관。
Using the time-of-flight secondary ion mass spectrometry method , the production yield of C-H cluster from carbon material bombarded by MeV ions was investigated .In the experiment ,Si+ and Au2+ ions generated by the 2 × 1.7MV tandem accelerator of Peking University were chosen as the primary ion beams .The mass of the secondary ion was calibrated by the sample with known mass .By analyzing the mass spectrum of the secondary ion bombarded by different ions ,it is found that the yield is related to the lateral straggling of ions in the material at this energy region .