The multiphoton ionization of the hydrogen-bonded clusters C_4H_5N-(H_2O)_n was studied using a time-of-flight mass spectrometer at 355nm and 532nm laser wavelengths.

• 在355、532nm激光波长下用TOF质谱研究了C4H5N－（H2O）n氢键团簇体系的多光子电离。