Título: | WATER MOLECULE FRAGMENTATION BY IMPACT OF HE(+) ions | ||||||||||||||||||||||||||||||||
Autor: |
PEDRO MARIANO YUNES GARCIA |
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Colaborador(es): |
GERALDO MONTEIRO SIGAUD - Orientador |
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Catalogação: | 06/NOV/2006 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=9238&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=9238&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.9238 | ||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||
In this work, absolute cross sections for the ionization
and fragmentation
of water vapor molecules are presented, for the ffirst
time, for collisions
with He(+) with energies of 1.0, 1.5 and 2.0 MeV, total and
partial in the
pure ionization, electron loss (projectile ionization) and
electron capture
by the projectile processes. These cross sections were
obtained by means
of coincidence measurements between the post-collision
projectile charge
states and the recoil ion charge states, the latter
determined by time-of-
°ight spectrometry.
Both the experimental setup and the methodology for data
acquisition are
described in detail, together with several procedures that
were needed to
the completion of this work.
The results are, whenever possible, compared with
experimental data ob-
tained not only in the Van de Graaff Accelerator
Laboratory of PUC-Rio,
but also from other groups, for the ionization and
fragmentation of the water
molecule by He(+) and other projectiles, and analyzed in
order to better un-
derstand the relative importance of the different
processes leading to water
molecule fragmentation in its transition from the
sequential to the explosive
regime.
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