2026-05-27T05:27:34Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/455672026-02-20T00:45:53Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Delgado-Pérez, Tomás author Vadillo-Pérez, José Miguel author Laserna-Vázquez, José Javier author 2014 The main difficulties in spectral interpretation of laser-induced plasmas from species containing C, N, O or H rely on the crossroad concerning their origin: direct release from native bonds of the molecule or recombination of atoms and molecular fragments with ambient constituents. In order to add further insight into the issue, this paper presents the influence of the surrounding atmosphere (gas type and pressure) on the spectra of energetic nitro compounds (TNT and PETN). The study was completed with coincidental detection at high vacuum of both optical emission and mass spectra originated from the same laser event. We have proposed probable fragmentation pathways for the compounds taking into account the reactions that prevail over other routes depending on experimental conditions: laser fluence, pressure and the surrounding atmosphere. The suggested routes are supported by identification of many non-emitting, reactive species present in the plasma using the corresponding mass spectra. Delgado, T., Vadillo, J.M., Laserna, J.J., J. Anal. At. Spectrom., 2014,29, 1675-1685 https://hdl.handle.net/10630/45567 10.1039/C4JA00157E Plasmas producidos por láser Primary and recombined emitting species in laser-induced plasmas of organic explosives in controlled atmospheres