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Home All issues Volume 529 (May 2011) A&A, 529 (2011) A146 Full HTML
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Table 1

Ion irradiation experiments of interstellar matter analogues.

Sample Ion E Experiment S e Sn/Se R p d ΦI ΦE T irr F I,max F E,max
(MeV) (MeV/(mg/cm2)) (μm) (μm) (ions cm-2 s-1) (MeV mg-1 s-1) (h) (ions cm-2) (MeV mg-1)
a-C:H 1 H+ 0.2 Catania 2009 7.092  ×  10-1 1.1  ×  10-3 1.46⋆  ≈0.9 2  ×  1012 1  ×  1012 0.6 4  ×  1015 2.8  ×  1015
a-C:H 1 He+ 0.2 Catania 2009 1.886 5.4  ×  10-3 0.933⋆  ≈0.9 6  ×  1011 1  ×  1012 1.9 4  ×  1015 7.5  ×  1015
a-C:H 1 Ar2+ 0.4 Catania 2009 5.001 3.3  ×  10-1 0.363⋆  ≈0.6 6  ×  1011 3  ×  1012 0.9 2  ×  1015 1  ×  1016
a-C:H 1 H+ 10 Tandem 2009 4.580  ×  10-2 5.5  ×  10-4 1010  ≈7 1.4  ×  1011 6.4  ×  109 4.0 2.1  ×  1015 9.6  ×  1013
a-C:H 1 H+ 10 Tandem 2009 4.580  ×  10-2 5.5  ×  10-4 1010  ≈10 0.7–1.2  ×  1012 3.2-5.5  ×  1010 6.1 2.0  ×  1016 9.1  ×  1014
a-C:H 1 He2+ 20 Tandem 2010 3.207  ×  10-1 5.9  ×  10-4 296.48  ≈11 1.2–1.9  ×  1010 3.9-6.1  ×  1010 5.7 3.0  ×  1014 9.7  ×  1013
a-C:H 1 C6+ 91 Tandem 2010 2.07 5.4  ×  10-4 213.67  ≈6 2.3–12  ×  1010 4.8–25  ×  1010 15.7 2.3  ×  1015 4.8  ×  1015
a-C:H 1 C5+ 50 Tandem 2009 3.274 5.7  ×  10-4 82.66  ≈12 1.5–7.5  ×  1010 0.5–2.5  ×  1011 5.3 8.2  ×  1014 2.7  ×  1015
a-C:H 1 Si7+ 85 Tandem 2009 15.91 7.9  ×  10-4 36.97  ≈6 0.5–2.3  ×  1010 0.8–3.7  ×  1011 3.5 1.0  ×  1014 1.6  ×  1015
a-C:H 1 Ni9+ 100 Tandem 2009 46.98 1.6  ×  10-3 24.31  ≈6 1.2  ×  1010 5.6  ×  1011 1.2 5.4  ×  1013 2.5  ×  1015
a-C:H 1 I12+ 160 Tandem 2010 89.33 3.5  ×  10-3 25.39  ≈6 1.6–3.6  ×  108 1.4–3.2  ×  1010 6.3 4.9  ×  1012 4.4  ×  1014
a-C:H 2 He2+ 20 Tandem 2010 3.207  ×  10-1 5.9  ×  10-4 296.48  ≈7 0.9–1.3  ×  1010 2.9–4.2  ×  1010 4.5 1.9  ×  1014 6.0  ×  1014
a-C:H 2 C6+ 91 Tandem 2010 2.07 5.4  ×  10-4 213.67  ≈7 2.2–4.5  ×  1010 4.6–9.3  ×  1010 5.4 6.0  ×  1014 1.3  ×  1015
a-C:H 2 I12+ 160 Tandem 2010 89.33 3.5  ×  10-3 25.39  ≈5 1.9–2.5  ×  108 1.7–2.2  ×  1010 2.3 1.4  ×  1012 1.2  ×  1014
Soot H+ 0.2 Catania 2007 5.909  ×  10-1 1.0  ×  10-3 1.21⋆  ≈5 2.5  ×  1012 1.5  ×  1012 0.2 2  ×  1015 1.2  ×  1015
Soot He+ 0.2 Catania 2009 1.588 5.0  ×  10-3 0.704⋆  ≈0.8 1  ×  1012 2  ×  1012 0.9 3.4  ×  1015 5.4  ×  1015
Soot H+ 10 Tandem 2009 4.109  ×  10-2 4.8  ×  10-4 758.01  ≈a few 5.3–9.7  ×  1011 2.2–4.0  ×  1010 4.5 1.1  ×  1016 4.6  ×  1014
Soot C5+ 50 Tandem 2009 2.864 5.3  ×  10-4 64.85  ≈4 2.3–5.7  ×  1010 6.6–16  ×  1010 1.9 2.7  ×  1014 7.8  ×  1014
Soot Si7+ 85 Tandem 2009 13.7 7.5  ×  10-4 29.35  ≈5 0.9–2.3  ×  1010 1.2–3.2  ×  1011 1.4 7.8  ×  1013 1.1  ×  1015
Soot Ni9+ 100 Tandem 2009 39.35 1.6  ×  10-3 19.35  ≈3 1.2  ×  1010 4.7  ×  1011 0.6 2.5  ×  1013 9.9  ×  1014

Notes. The different samples irradiated with different ions and energies E are listed. The corresponding electronic stopping cross sections Se, ratios between nuclear and electronic stopping cross sections Sn/Se, the projected ranges Rp, i.e. the length the ion covers in the target material before stopping, and the sample thicknesses d are indicated. For each experiment, the ranges of the ion and energy fluxes ΦI and ΦE, the irradiation times Tirr, and the maximum ion and energy fluences reached FI,max and FE,max are also reported.

(⋆)

The projected ranges for experiments in Catania, where the ion incident angle is αion = 45°, were multiplied by cosαion to take the effective thickness (in the direction of the ion beam) of the irradiated sample into account.

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