Ion Irradiation of Minor Bodies in the Outer Solar System

2006 ◽  
pp. 81-85
Author(s):  
Giovanni Strazzulla
Keyword(s):  
Solar System ◽  
Ion Irradiation ◽  
Outer Solar System

scholarly journals Production of Oxidants by Ion Bombardment of Icy Moons in the Outer Solar System

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Philippe Boduch ◽  
Enio Frota da Silveira ◽  
Alicja Domaracka ◽  
Oscar Gomis ◽  
Xue Yang Lv ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Solar System ◽  
Ion Irradiation ◽  
Pure Water ◽  
Outer Solar System ◽  
Water Ice ◽  
Icy Moons ◽  
Different Temperatures ◽  
Frozen Gases

Our groups in Brazil, France and Italy have been active, among others in the world, in performing experiments on physical-chemical effects induced by fast ions colliding with solids (frozen gases, carbonaceous and organic materials, silicates, etc.) of astrophysical interest. The used ions span a very large range of energies, from a few keV to hundreds MeV. Here we present a summary of the results obtained so far on the formation of oxidants (hydrogen peroxide and ozone) after ion irradiation of frozen water, carbon dioxide and their mixtures. Irradiation of pure water ice produces hydrogen peroxide whatever is the used ion and at different temperatures. Irradiation of carbon dioxide and water frozen mixtures result in the production of molecules among which hydrogen peroxide and ozone. The experimental results are discussed in the light of the relevance they have to support the presence of an energy source for biosphere on Europa and other icy moons in the outer Solar System.

Radiolysis of N2-rich astrophysical ice by swift oxygen ions: implication for space weathering of outer solar system bodies

2017 ◽  
Vol 19 (35) ◽  
pp. 24154-24165 ◽  
Author(s):  
F. A. Vasconcelos ◽  
S. Pilling ◽  
W. R. M. Rocha ◽  
H. Rothard ◽  
P. Boduch
Keyword(s):  
Solar System ◽  
Ion Irradiation ◽  
Space Weathering ◽  
Outer Solar System ◽  
Oxygen Ions ◽  
Solar System Bodies

We reported results for ion irradiation of N2-rich ices with implications for space weathering of outer solar bodies.

Ion irradiation of acetylene ice in the ISM and the outer Solar system: laboratory simulations

2020 ◽  
Vol 495 (1) ◽  
pp. 40-57
Author(s):  
R C Pereira ◽  
A L F de Barros ◽  
C A P da Costa ◽  
P R B Oliveira ◽  
D Fulvio ◽  
...  
Keyword(s):  
Solar System ◽  
Cross Section ◽  
Cross Sections ◽  
Ion Irradiation ◽  
Galactic Cosmic Rays ◽  
Young Stellar Objects ◽  
Outer Solar System ◽  
Stellar Objects ◽  
Important Species ◽  
H Beam

ABSTRACT)3 Acetylene, C2H2, has been observed in the interstellar medium, mostly around young stellar objects, as well as in molecular clouds and cometary comae, representing an important species of astrophysical interest. In this work, we present a laboratory study of the C2H2 radiolysis at 45 K for three different beams and energies: 1.0 MeV H+ and He+, and 1.0 and 1.5 MeV N+ beams. Fourier transform infrared spectroscopy was used for monitoring the molecular changes induced by the ion processing. Two different sample thicknesses were irradiated; for the thicker one, implantation had occurred. Spectra and absorbance evolutions for the thin and thick films are qualitatively different. Four C2H2 bands are observed at 3225, 1954, 1392, and 763 cm−1. The C2H2 compaction and apparent destruction cross-sections are determined. For the case of the H+ beam, the compaction cross-section dominates. Concerning molecular synthesis by irradiation, New product bands were not observed in the thin ice irradiations; for the thicker film ice, the daughter species CH4, C2H4, C3H6, and C4H4 have been identified and their destruction and formation cross-sections determined. The apparent destruction cross-section was found to be a function of the electronic stopping power (Se) as σd ∝ S$_\mathrm{ e}^{3/2}$. The half-life of the C2H2 bombarded by galactic cosmic rays is estimated. The current findings are a contribution to the understanding of how the molecules synthesized upon irradiation of Interstellar and outer Solar system ices participate to the molecular enrichment and to the physicochemical evolution of the Universe.

Application of ion irradiation experiments to planetary surfaces in the Outer Solar System

1992 ◽  
Vol 56 (1) ◽  
pp. 35-45 ◽  
Author(s):  
G. Strazzulla ◽  
G. Leto ◽  
M. E. Palumbo ◽  
G. A. Baratta
Keyword(s):  
Solar System ◽  
Ion Irradiation ◽  
Outer Solar System ◽  
Planetary Surfaces

Ion irradiation of pure and amorphous CH4 ice relevant for astrophysical environments

2017 ◽  
Vol 19 (20) ◽  
pp. 12845-12856 ◽  
Author(s):  
F. A. Vasconcelos ◽  
S. Pilling ◽  
W. R. M. Rocha ◽  
H. Rothard ◽  
P. Boduch ◽  
...  
Keyword(s):  
Solar System ◽  
Molecular Species ◽  
Ion Irradiation ◽  
Outer Solar System ◽  
System P

We reported results for ion irradiation of CH4 ice with implications for abundance of molecular species in icy objects in the outer Solar System.

Antiproton-catalyzed microfission/fusion propulsion systems for exploration of the outer solar system and beyond

1997 ◽  
Author(s):  
R. Lewis ◽  
G. Smith ◽  
B. Dundore ◽  
J. Fulmer ◽  
S. Chakrabarti ◽  
...  
Keyword(s):  
Solar System ◽  
Outer Solar System ◽  
Propulsion Systems
Sign in / Sign up

Export Citation Format

Share Document