英国科学家最近利用正电子研制成功一种金属探伤仪,可发现金属内微小的缺陷.英国AEA公司发明的这种仪器可将正电子束扫描到需要检测的金属上,当正电子进入金属后使与金属内的电子发生湮灭现象.金属内部不同结构处正、负电子湮灭时释放出的辐射现象有所不同,因而使用该仪器分析记录下辐射现象就可得出金 British scientists recently developed a successful use of positron detector metal detector can detect tiny defects within the metal.AEA UK invented this instrument can scan the positron beam to be detected on the metal when positrons into the metal to make And annihilation of electrons within the metal phenomenon.Different structures within the metal at the positive and negative electron annihilation emitted radiation phenomena are different, so the use of the instrument to record and record the radiation phenomenon can be obtained gold