Ln recent years, the aforementioned states have been obviously improved by developing a new kind of technique: MCs+-SIMS, i. e. detection of MCS+ molecular secondary ions instead of respective M ± atomic species under CS+ primary ion bombardment. 近几年来,上述状况已经通过一种新技术开发得到明显改善,这就是MCS+-SIMS技术,即在CS+一次离子轰击下检测分子型二次离子MCS+而不是M±。