Multiphoton ionization of acetone-water clusters at 355 nm

摘要

The multiphoton ionization of acetone-water clusters were detected at 355 nm laser wavelength by using the time of flight mass spectrometer（TOF-MS）.The experiments show that all products are protonated.Three main products such as （CH3COCH3）n-（H2O） n-2 H+,（CH3COCH3）n-（H2O） n-1 H+ and （CH3COCH3）n-（H2O）nH+ are concluded from the results.In order to study the equilibrium structures of the （CH3COCH3）n-（H2O） n-2 H+,the ab-initio calculation is used on them.The experiment is even done when the volume rate of acetone to water is 1∶2.