摘要
英制ＭＭ１２００质谱计原机配有惠普数据系统终端（ＨＰ９８４５），因超期运转而报废。为此研制了通用接口及配套应用软件，成功地改造了原数据系统终端。新的终端可以直接在ＩＢＭ各系列计算机上进行操作。将自行研制的Ｎｄ：ＹＡＧ激光器、小型载样系统和改装的激光显微镜与高精密ＭＭ１２００质谱计的离子源进样系统联机，应用新的数据系统自动采样和数据处理，在光片上进行４０Ａｒ／３９Ａｒ单颗粒矿物年龄测定，快速准确地测得安徽碧溪岭榴辉岩中多硅白云母（６６６．９±６．５）Ｍａ和福州魁岐晶洞花岗岩中微粒角闪石（９１．３±７．０）Ｍａ的良好的重复性数据。
After years of long and successively overrunning,the original data terminal,HP9845,equipped with MM1200 mass spectrometer from England is now at a halt Efforts have been made to established a new data terminal The whole system developed consists of an updated hard wareinter face and associated software The new data terminal connected with an IBM-series compatible computer achieves the automatic data acquisition and processing 40 Ar/ 39 Ar dating of single mineral grain on polished thin section has been carried out using our newly installed laser probe masss pectrometer with the new data terminal system The 40 Ar/ 39 Ar age results obtained by this method for phengite within the Bixiling eclogite from Anhui Province,and for hornblende rarely occurring within the Kuiqi miarolitic alkaline granite from Fujian Province are(666 9±16 5)Ma and (91 3±7 0)Ma,respectively These ages are in good agreement with those obtained by conventional 40 Ar/ 39 Ar dating of the same samples
出处
《地球化学》
CAS
CSCD
北大核心
1997年第3期12-19,共8页
Geochimica
基金
国家自然科学基金
中国科学院大型仪器升级改造资助
关键词
单颗粒矿物
氩40
氩39
同位素年龄
激光探针质谱
continuous laser microprobe mass spectrometer,new data terminal system,single mineral grain, 40 Ar/ 39 Ar dating
