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Comparison of UV and high-energy ion irradiation of methanol:ammonia ice
Aims. The main goal of this work is to compare the effects induced in ices of astrophysical relevance by high-energy ions, simulating cosmic rays, and by vacuum ultraviolet (UV) photons.Methods. ThisExpand
Swift heavy ion irradiation of water ice from MeV to GeV energies - Approaching true cosmic ray compaction
Context. Cosmic ray ion irradiation affects the chemical composition of and triggers physical changes in interstellar ice mantles in space. One of the primary structural changes induced is theExpand
Neutral strange particle production in sulphur-sulphur and proton-sulphur collisions at 200 GeV/nucleon
AbstractThe production of Λ, $$\bar \Lambda$$ andKs0 has been studied in 200 GeV/nucleonp+S and S+S collisions in the streamer chamber of the NA35 experiment at the CERN SPS. Significant enhancementExpand
Particle Induced Electron Emission I
Kinetic electron emission from solid surfaces under ion bombardment.- Kinetic electron emission from ion penetration of thin foils in relation to the pre-equilibrium of charge distributions.- SlowExpand
Radiolysis of frozen methanol by heavy cosmic ray and energetic solar particle analogues
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 transfer processes thatExpand
Radiolysis of H2O:CO2 ices by heavy energetic cosmic ray analogs
An experimental study of the interaction of heavy, highly charged, and energetic ions (52 MeV 58Ni13+) with pure H2O, pure CO2 and mixed H2O:CO2 astrophysical ice analogs is presented. This analysisExpand
Strange particle production in nuclear collisions at 200 GeV per nucleon
AbstractMultiplicities and spectra of strange particles ( $$\Lambda ,\bar \Lambda ,K_S^0 ,K^ +$$ andK− produced in central32S+S,32S+Ag and32S+Au collisions at 200 GeV per nucleon are presented andExpand
Radiolysis of amino acids by heavy and energetic cosmic ray analogues in simulated space environments: α-glycine zwitterion form
In this work, we studied the stability of the glycine molecule in the crystalline zwitterion form, known as {\alpha}-glycine ($^{+}$NH$_{3}$CH$_{2}$COO$^{-}$) under action of heavy cosmic rayExpand
Theoretical and experimental study of electronic temperatures in heavy ion tracks from Auger electron spectra and thermal spike calculations
Electron spectra were measured at GANIL with different heavy ions (C–Mo) and various charge states q (q = 6–39) at fixed projectile velocity v (v = 19 atomic units, 9.2 MeV/u). A projectile dependentExpand
Implantation of multiply charged carbon ions in water ice
Context. Several objects in the solar system like Europa, Ganymede, and Callisto have frozen surface (main component: H2O). The associated thickness is bigger than the penetration depth of theExpand