The role of the environment in the ion induced fragmentation of uracil.
The fragmentation of uracil molecules and pure and nano-hydrated uracil clusters by (12)C(4+) ion impact is investigated. This work focuses on the fragmentation behavior of complex systems and the effect of the environment. On the one hand, it is found that the environment in the form of surrounding uracil or water molecules has a significant influence on the fragmentation dynamics, providing an overall 'protective' effect, while on the other hand we observe the opening of specific fragmentation channels. In particular, we report on the first observation of a series of hydrated fragments. This indicates a strong interaction between uracil and water molecules, holding the water clusters bound to the observed molecular fragments.
CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. paola.bolognesi@cnr.it.
Pal
P
Markush
CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. paola.bolognesi@cnr.it.
Paola
P
Bolognesi
CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. paola.bolognesi@cnr.it and Dipartimento di Chimica, Sapienza Università di Roma, Roma, Italy.
Antonella
A
Cartoni
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France.
Patrick
P
Rousseau
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France.
Sylvain
S
Maclot
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France.
Rudy
R
Delaunay
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France.
Alicja
A
Domaracka
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France and J. Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, Prague, Czech Republic.
Jaroslav
J
Kocisek
CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. paola.bolognesi@cnr.it.
Mattea C
MC
Castrovilli
Normandie Université, CIMAP (UMR6252 CEA/CNRS/ENSICAEN/UNICAEN), Boulevard Henri Becquerel, BP5133, 14070 Caen Cedex 5, France.
Bernd A
BA
Huber
CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy. paola.bolognesi@cnr.it.
Lorenzo
L
Avaldi