Formic Acid Ionization and Fragmentation by Multiphoton Absorption

Multiphoton absorption is an intensity dependent nonlinear effect related to the excitation of virtual intermediate states. In present work, multiphoton ionization and dissociation formic acid molecule (HCOOH) by interaction with photons from 532 Nd: YAG laser at different intensities are discussed, using carrier gases. The induced fragmentation-ionization patterns show up 17 fragments channels proposed. Some evidence small clusters formation conformational memory ratio detected products, CO+ CO2+, on light available results, it possible conclude that they arise trans cis acid. Our results compared those obtained in other laboratories under experimental conditions, some them only partial agreement differences discussed. Following Keldysh description possible, our parameters, characterize regime.