氨团簇(NH_3)_n的多光子电离质谱研究

Studies on Mass Spectra of Multi-Photon Ionization of Ammonia Clusters (NH_3)_n

在355nm激光作用下,对氨团簇的多光子电离过程进行了研究,发现电离过程中出现了氨团簇离子序列(NH3)+n(n=2—6)和氨质子化团簇离子序列(NH3)nH+(n=2—15)。分析认为在氨团簇的多光子电离过程中仅可能是由于氨团簇在激光作用下遵循了AID机制。而对于实验中出现的氨质子化团簇离子序列,目前实验上的困难暂不能确定其产生的具体途径。

The process of multi-photon ionization with laser at 355nm was studied. The series of the ammonia cluster ions （NH3）n＋ （n=2-6） and protonated ammonia cluster （NH3）n H^＋（n=2-15） are produced. The mechanism of AID must be followed in the process of ionization by laser. However, the protonated ammonia cluster is not determined due to the difficulties in present experiment.