NDLI: Ionization and Fragmentation of DCOOD Induced by Synchrotron Radiation at the Oxygen 1s Edge: The Role of Dimer Formation.

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Ionization and Fragmentation of DCOOD Induced by Synchrotron Radiation at the Oxygen 1s Edge: The Role of Dimer Formation.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Marinho, Ricardo R. T. Arruda, Manuela S. Medina, Aline Prudente, Frederico V. Sousa, Josenilton N. Mendes, Luiz A. V.
Description	Author Affiliation: Arruda MS ( Instituto de Física, Universidade Federal da Bahia , 40170-115 Salvador, BA, Brazil.); Medina A ( Centro de Ciências Exatas e Tecnológicas, Universidade Federal do Recôncavo da Bahia , 44380-000 Cruz das Almas, BA, Brazil.); Sousa JN ( Instituto de Física, Universidade Federal da Bahia , 40170-115 Salvador, BA, Brazil.); Mendes LA ( Instituto de Física, Universidade Federal da Bahia , 40170-115 Salvador, BA, Brazil.); Marinho RR ( Instituto de Física, Universidade Federal da Bahia , 40170-115 Salvador, BA, Brazil.); Prudente FV ( Instituto de Física, Universidade Federal da Bahia , 40170-115 Salvador, BA, Brazil.)
Abstract	The ionization and photofragmentation of molecules in the core region has been widely investigated for monomers and dimers of organic molecules in the gas phase. In this study, we used synchrotron radiation to excite electrons of the oxygen K-edge in an effusive molecular beam of doubly deuterated formic acid. We used time-of-flight mass spectrometry and employed the spectroscopic techniques photoelectron-photoion coincidence and photoelectron photoion-photoion coincidence to obtain spectra of single and double coincidences at different pressures. Our results indicate the presence of ions and ion pairs that have charge-to-mass ratio higher than the monomer DCOOD, as the (DCOOD)·D(+), and pairs (DCO(+), DCO(+)) and (CO(+), DCO(+)). Comparing the spectra obtained for different pressures we can ascertain that these ions are formed by the fragmentation of DCOOD dimers.
ISSN	10895639
Issue Number	27
Journal	The Journal of Physical Chemistry A
Volume Number	120
e-ISSN	15205215
Language	English
Publisher	American Chemical Society (United States)
Publisher Date	2016-07-14
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Physical and Theoretical Chemistry

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