Hydroxylamine in astrophysical ices: Infrared spectra and cosmic-ray-induced radiolytic chemistry

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Table 5

Calculated radiolytic destruction parameters of hydroxylamine-containing ices irradiated by 15 keV protons.

Ice	$σ_{des}^{'} (10^{15} {cm}^{2})$ $\sigma _{{\rm{des}}}^\prime \left( {{{10}^{15}}{\rm{c}}{{\rm{m}}^2}} \right)\,\left( {2600\,{\rm{c}}{{\rm{m}}^{ - 1}}} \right)$			LET	D_1/2	G
Ice	(1188 cm^–1)	(2600 cm^–1)	(920 cm^–1)	(keV mm^–1)	(eV molecule^–1)	(molecules per 100 eV)
NH₂OH	3.5 ± 0.2	3.7 ± 0.4		56	6.6 ± 0.5	11 ± 1
NH₂OH:H₂O (1:10)	5.6 ± 0.6			23	1.5 ± 0.5	46 ± 5
NH₂OH:H₂O:CO (1:7:5)	4.6 ± 0.5			36	2.8 ± 0.5	25 ± 2
NH₂OH:D₂O:CO (1:6:3)	3.9 ± 0.4	5.4 ± 0.9	4.2 ± 0.7	38	2.9 ± 0.5	24 ± 2

Notes. N.B. $σ_{des}^{'}$ $\sigma _{{\rm{des}}}^\prime$ = effective destruction cross-section; LET = linear energy transfer; D_1/2 = half-life dose; G = G-value.

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