Radiolysis of frozen methanol by heavy cosmic ray and energetic solar particle analogues

ALF De Barros, A Domaracka… - Monthly Notices of …, 2011 - academic.oup.com
The chemical and physical effects induced by fast heavy ion irradiation on frozen pure
methanol (CH3OH) at 15 K were studied. These energetic ions can simulate the energy …

Chemical reactions induced in frozen formic acid by heavy ion cosmic rays

DPP Andrade, ALF de Barros, S Pilling… - Monthly Notices of …, 2013 - academic.oup.com
We studied the effects produced by the interaction of heavy ion cosmic rays with interstellar
and cometary organic molecules in the solid phase. Formic acid (HCOOH) ice at 15 K was …

The effect of broadband soft X-rays in SO2-containing ices: implications on the photochemistry of ices toward young stellar objects

S Pilling, A Bergantini - The Astrophysical Journal, 2015 - iopscience.iop.org
We investigate the effects produced mainly by broadband soft X-rays up to 2 keV (plus fast
(∼ keV) photoelectrons and low-energy (∼ eV) induced secondary electrons) in the ice …

Formation routes of interstellar glycine involving carboxylic acids: Possible favoritism between gas and solid phase

S Pilling, L Baptista, HM Boechat-Roberty… - Astrobiology, 2011 - liebertpub.com
Despite the extensive search for glycine (NH2CH2COOH) and other amino acids in
molecular clouds associated with star-forming regions, only upper limits have been derived …

Radiation-induced transformations of matrix-isolated formic acid: evidence for the HCOOH→ HOCO+ H channel

SV Ryazantsev, VI Feldman - Physical Chemistry Chemical Physics, 2015 - pubs.rsc.org
The effect of X-ray irradiation on the isolated formic acid molecules (HCOOH) in solid noble
gas matrices (Xe, Kr, Ar, and Ne) at very low temperatures (6 K) was first studied by FTIR …

X-ray photodesorption from methanol ice

DPP Andrade, MLM Rocco… - Monthly Notices of the …, 2010 - academic.oup.com
The abundances of molecules and ions depend on the mechanisms of their formation and
destruction that can occur both in the gas phase and in the condensed phase on grain …

Electron attachment and electron ionization of formic acid clusters embedded in helium nanodroplets

M Mahmoodi-Darian, L Lundberg, S Zöttl… - Journal of the …, 2019 - ACS Publications
We report the results of an experimental study of electron ionization of large helium
nanodroplets doped with formic acid (FA). Several homologous series of cluster anions are …

Ionic desorption in PMMA–gamma-Fe2O3 hybrid materials induced by fast electrons: An experimental and theoretical investigation

MVJ Rocha, HWP Carvalho, LCT Lacerda… - … Acta Part A: Molecular …, 2014 - Elsevier
Abstract Poly (methylmetacrilate)-maghemite (PMMA-gamma-Fe 2 O 3) hybrid material was
studied by the electron stimulated ion desorption (ESID) techniques coupled with time-of …

Astrobiology in Brazil: early history and perspectives

F Rodrigues, D Galante, IG Paulino-Lima… - International Journal of …, 2012 - cambridge.org
This review reports the Brazilian history in astrobiology, as well as the first delineation of a
vision of the future development of the field in the country, exploring its abundant …

Electron attachment and electron ionization of helium droplets containing clusters of C60 and formic acid

M Mahmoodi-Darian, EJ Al Maalouf, S Zöttl… - International Journal of …, 2020 - Elsevier
High-resolution mass spectra of helium droplets doped with C 60 and formic acid (FA) are
ionized by electrons. Positive ion mass spectra reveal cluster ions [(C 60) p FA n]+ together …