62 citations · 306 across the 17 of their papers we have counts for
17 papers
Bombardment of CO ice by cosmic rays: I. Experimental insights into the microphysics of molecule destruction and sputtering
Alexei V. Ivlev, Barbara M. Giuliano, Zoltán Juhász +12
We present a dedicated experimental study of microscopic mechanisms controlling radiolysis and sputtering of astrophysical ices due to their bombardment by cosmic ray ions. Such io…
Proton and electron irradiations of CH4:H2O mixed ices
Duncan V. Mifsud, Péter Herczku, Béla Sulik +7
The organic chemistry occurring in interstellar environments may lead to the production of complex molecules that are relevant to the emergence of life. Therefore, in order to unde…
Sulfur Ion Implantations Into Condensed CO2: Implications for Europa
D. V. Mifsud, Z. Kaňuchová, P. Herczku +12
The ubiquity of sulfur ions within the Jovian magnetosphere has led to suggestions that the implantation of these ions into the surface of Europa may lead to the formation of SO2.…
Energetic Electron Irradiations of Amorphous and Crystalline Sulphur-Bearing Astrochemical Ices
Duncan V. Mifsud, Péter Herczku, Richárd Rácz +10
Laboratory experiments have confirmed that the radiolytic decay rate of astrochemical ice analogues is dependent upon the solid phase of the target ice, with some crystalline molec…
Ozone Production in Electron Irradiated CO2:O2 Ices
Duncan V. Mifsud, Zuzana Kaňuchová, Sergio Ioppolo +9
The detection of ozone (O3) in the surface ices of Ganymede, Jupiters largest moon, and of the Saturnian moons Rhea and Dione, has motivated several studies on the route of formati…
Laboratory Experiments on the Radiation Astrochemistry of Water Ice Phases
Duncan V. Mifsud, Perry A. Hailey, Péter Herczku +8
Water (H2O) ice is ubiquitous component of the universe, having been detected in a variety of interstellar and Solar System environments where radiation plays an important role in…
Comparative Electron Irradiations of Amorphous and Crystalline Astrophysical Ice Analogues
Duncan V. Mifsud, Perry A. Hailey, Péter Herczku +8
Laboratory studies of the radiation chemistry occurring in astrophysical ices have demonstrated the dependence of this chemistry on a number of experimental parameters. One experim…
Mid-IR and VUV Spectroscopic Characterisation of Thermally Processed and Electron Irradiated CO2 Astrophysical Ice Analogues
DV Mifsud, Z Kaňuchová, S Ioppolo +19
The astrochemistry of CO2 ice analogues has been a topic of intensive investigation due to the prevalence of CO2 throughout the interstellar medium and the Solar System, as well as…
Electron Irradiation and Thermal Chemistry Studies of Interstellar and Planetary Ice Analogues at the ICA Astrochemistry Facility
Duncan V. Mifsud, Zoltán Juhász, Péter Herczku +10
The modelling of molecular excitation and dissociation processes relevant to astrochemistry requires the validation of theories by comparison with data generated from laboratory ex…
The Ice Chamber for Astrophysics-Astrochemistry (ICA): A New Experimental Facility for Ion Impact Studies of Astrophysical Ice Analogues
Péter Herczku, Duncan V. Mifsud, Sergio Ioppolo +11
The Ice Chamber for Astrophysics-Astrochemistry (ICA) is a new laboratory end-station located at the Institute for Nuclear Research (Atomki) in Debrecen, Hungary. The ICA has been…
Sulfur Ice Astrochemistry: A Review of Laboratory Studies
Duncan V. Mifsud, Zuzana Kanuchova, Peter Herczku +6
Sulfur is the tenth most abundant element in the universe and is known to play a significant role in biological systems. Accordingly, in recent years there has been increased inter…
Anion and cation emission from water molecules after collisions with 6.6-keV O ions
Zoltán Juhász, Béla Sulik, Elie Lattouf +9
Anion and cation emission following water dissociation was studied for 6.6-keV O + HO collisions. Absolute cross sections for the emission of all positively and…
Ionization of small molecules induced by H, He and N projectiles: comparison of experiment with quantum and classical calculations
S. T. S. Kovács, P. Herczku, Z. Juhász +3
We report the energy and angular distribution of ejected electrons from CH and HO molecules impacted by 1 MeV H, He and 650 keV N ions. Spectra were measured…
Dissociative ionization of the HO molecule induced by medium energy singly charged projectiles
S. T. S. Kovács, P. Herczku, Z. Juhász +3
We report on the fragmentation of the water molecule by MeV H, He and 650 keV N ion impact. The fragment-ion energy spectra were measured by an electrostatic…
Anion emission from water molecules colliding with positive ions: Identification of binary and many-body processes
J. -Y. Chesnel, Z. Juhász, E. Lattouf +9
It is shown that negative ions are ejected from gas-phase water molecules when bombarded with positive ions at keV energies typical of solar-wind velocities. This finding is releva…
Formation of negative hydrogen ions in 7-keV OH+ + Ar and OH+ + acetone collisions: a general process for H-bearing molecular species
Zoltán Juhász, Béla Sulik, Jimmy Rangama +4
We demonstrate that the formation of negative hydrogen ions (H-) occurs in a wide class of atomic and molecular collisions. In our experiments, H- emission from hydroxyl cations an…
Formation of anions and cations via a binary-encounter process in OH + Ar collisions: the role of dissociative excitation and statistical aspects
E. Lattouf, Z. Juhász, J. -Y. Chesnel +8
Molecular fragmentation leading to the formation of negatively and positively charged hydrogen ions in 7-keV OH + Ar collisions is investigated experimentally. The most strikin…