1. Infrared Spectroscopic Study on Swift-Ion Irradiation of Solid N2O–H2O Samples: Synthesis of N–O Bearing Species in Astrophysical Ices
- Author
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Alexandre Bergantini, Ana Lucia Ferreira de Barros, Naomi Nitahara Toribio, Hermann Rothard, Philippe Boduch, Enio Frota da Silveira, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (Rio de Janeiro) ( CEFET/RJ), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Atomes, Molécules et Agrégats (AMA), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)
- Subjects
[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,Physical and Theoretical Chemistry - Abstract
International audience; As of early 2022, only six species bearing an N−Obond have been detected toward cold molecular clouds and regionsof star formation. It is not clear yet if the small number of N−Obond species found in the interstellar medium so far stems fromphysical and technological limitations of astronomical detectiontechniques, or whether in fact molecules that bear an N−O bondare for some reason rare in these objects of the interstellar medium.Astronomical N−O bearing molecules are important because theyare part of astrochemical models which propose that they areprecursors of hydroxylamine (NH2OH), a species linked to theformation of prebiotic amino acids in space. The aim of this studyis the better understanding of the open question of the interstellarsynthesis of N−O bearing species. We have analyzed by infraredspectroscopy an astrophysically relevant polar ice mixture of N2O:H2O processed by 90 MeV 136Xe23+ ions, which can mimic thephysicochemical processes triggered by cosmic rays in water-covered interstellar ice grains. The results show the formation of N2O3and of H2O2, but no HN−O species of any kind were detected. Such findings are discussed in light of recent studies from our groupand from the literature.
- Published
- 2022
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