IMPROVEMENT OF THE POSITRON LIFETIME SPECTROMETER WORKING IN A MAGNETIC FIELD  

作　　者：王海东 张天保 王淑英 杨广明 

机构地区：[1]Institute of High Energy Physics, Academia Sinica, Beijing 100080, PRC

出　　处：《Chinese Science Bulletin》1992年第3期194-197,共4页

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：Ⅰ. INTRODUCTION In the past experiments on the magnetic quenching of positronium atom （a hydrogenlike bound state of positron and dectron ）, the plastic scintillator and BaF₂ crystal were usually used as the detectors in the positron lifetime spectrometer. In those cases, a long light guide between the detector and the photomultiplier was exclusively necessary for keeping

关 键 词：POSITRONIUM MAGNETIC QUENCHING LIFETIME spectrometer. 

分 类 号：N[自然科学总论]