Variation of the sticking of methanol on low-temperature surfaces as a possible obstacle to freeze out in dark clouds

The latter suggestion is supported by the fact that the CH 3 OH peak coincides with the dust temperature minimum (Appendix B). The former condition cannot be properly tested using

18 have demonstrated the high efficiency (50%) of water formation from O and D atoms on compact water ices substrates at 10 K using TPD experiments. Re- cently, Jing et al. 19

At re- latively high temperature (above 60 K) the emission spectra show only four lines due to free - as well as bound - direct and indirect excitonic emissions and the excito-

Here we present the results of a neutron scattering investigation performed to study the low- frequency features of water absorbed in Nafion as a function of

[7], the data were analysed by introducing three time- (i.e. coverage-) dependent parameters: the binding energy ε, the sticking coefficient S, defined as the fraction of incident

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

ABSTRACT - Pulsed-laser imaging atom-probe and high resolution voltage pulsed atom-probe were employed to study the chemisorption behavior of CO on rhodium surfaces at

Temperature programmed desorption (TPD) experiments of formamide and methylamine ices were performed in the sub- monolayer and monolayer regimes on graphite (HOPG) and