Formic Acid Ionization and Fragmentation by Multiphoton Absorption
| Autor: | Ignacio Alvarez, T. Bautista, Alfonso Guerrero, Carmen Cisneros, E. Prieto, C. F. Betancourt |
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| Rok vydání: | 2021 |
| Předmět: |
Chemistry
Formic acid 05 social sciences 010402 general chemistry Laser 01 natural sciences Molecular physics Dissociation (chemistry) 0104 chemical sciences law.invention chemistry.chemical_compound Fragmentation (mass spectrometry) law Ionization 0502 economics and business Molecule Absorption (chemistry) 050203 business & management Excitation |
| Zdroj: | Journal of Nuclear Physics, Material Sciences, Radiation and Applications. 8:197-201 |
| ISSN: | 2321-9289 2321-8649 |
| DOI: | 10.15415/jnp.2021.82026 |
| Popis: | Multiphoton absorption is an intensity dependent nonlinear effect related to the excitation of virtual intermediate states. In the present work, multiphoton ionization and dissociation of the formic acid molecule (HCOOH) by the interaction with photons from 532 Nd: YAG laser at different intensities are discussed, using different carrier gases. The induced fragmentation-ionization patterns show up to 17 fragments and dissociation channels are proposed. Some evidence of small clusters formation and conformational memory from the ratio of the detected products, CO+ and CO2+, on the light of the available results, it is possible to conclude that they arise from trans and cis formic acid. Our results are compared with those obtained in other laboratories under different experimental conditions, some of them show only partial agreement and differences are discussed. Following the Keldysh description it is possible, from our experimental parameters, characterize our results, in the multiphoton absorption regime. |
| Databáze: | OpenAIRE |
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