Campo DC | Valor | Idioma |
dc.contributor.author | Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida | - |
dc.contributor.author | Souza, Gerardo Gerson Bezerra de | - |
dc.contributor.author | Maciel, Joselito B. | - |
dc.creator | Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida | - |
dc.creator | Souza, Gerardo Gerson Bezerra de | - |
dc.creator | Maciel, Joselito B. | - |
dc.date.accessioned | 2013-08-19T18:14:04Z | - |
dc.date.available | 2013-08-19T18:14:04Z | - |
dc.date.issued | 1998 | - |
dc.identifier.issn | 0103-5053 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/12626 | - |
dc.description | p. 521-524 | pt_BR |
dc.description.abstract | Ionic fragmentation of methylmethacrylate has been observed using synchrotron radiation and
laser excitation. A recently developed time-of-flight mass spectrometer was used for the ionic
identification. In the case of synchrotron radiation, both low energy (12.1 eV) and high energy (287.9
eV) photons were used. Although a definite increase in fragmentation was observed while moving
from 12.1 to 287.9 eV, the fragmentation pattern remained basically the same in both cases. The
parent peak stays clearly visible and intense fragments, associated with m/q = 15, 39, 41 and 69
dominate both synchrotron radiation-induced spectra. Multiphoton ionization causes much extensive
fragmentation, the parent ion could not be observed, and C+ ion becomes the most intense peak
in the spectrum. Ions at m/q = 15, 39, 41 and 69 are observed using laser and synchrotron radiation,
which demonstrates their high stability. Doubly or multiply-charged ions have not been observed. | pt_BR |
dc.language.iso | en | pt_BR |
dc.publisher | Journal of the Brazilian Chemical Society | pt_BR |
dc.source | http://dx.doi.org/10.1590/S0103-50531998000600003 | pt_BR |
dc.subject | methylmethacrylate | pt_BR |
dc.subject | synchrotron | pt_BR |
dc.subject | multiphoton ionization | pt_BR |
dc.title | Ionic Fragmentation of Methyl Methacrylate Induced by Synchrotron Radiation and Multiphoton Ionization | pt_BR |
dc.title.alternative | Journal of the Brazilian Chemical Society | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.description.localpub | São Paulo | pt_BR |
dc.identifier.number | v. 9, n. 6 | pt_BR |
Aparece nas coleções: | Artigo Publicado em Periódico (Química)
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