This thesis is an experimental study of the UV irradiation of the interstellar ice analogues, relevant for the different stages of the star and planet formation sequence. It describes in detail... Show moreThis thesis is an experimental study of the UV irradiation of the interstellar ice analogues, relevant for the different stages of the star and planet formation sequence. It describes in detail photodesorption and photoconversion processes, and as such, contributes to worldwide efforts that aim at understanding how chemistry in space could have contributed to the origin of life on Earth and possibly planets around other stars. Show less
The thesis contains three topics on transport in nanostructres. Chpt. 2 explains the loss of entanglement in electronic pairs that enter chaotic quantum dots. The quantitiy that is affected are... Show moreThe thesis contains three topics on transport in nanostructres. Chpt. 2 explains the loss of entanglement in electronic pairs that enter chaotic quantum dots. The quantitiy that is affected are timedependent and spaceresolving current measurements. Looking at statisticcs dots, it is discovered that there the vulnerability of the entanglement between electron pairs with respect to dephasing depends on the presence of magnetic fields and is usually seveer. A test for total loss of entanglement is formulated by means of spin resolving noise correlators.Chpt. 3 postulates the extension of a model for inelastic scattering to descibe that there is a temperature rang in which weak localization is not present but shot noise well measureable. The model relies on the use of of diagramatic expansions within random matrix theory. Chapt. 4 and 5 consider a tripple quantum dots in which despite an applied voltage and despite levels in that voltage window, the current is suppressed to zero. This is diminished by couplings to phonons. It is found that couting of individual electrons on such a multi dot structure should lead to dephasing dependent statistics. Chpt. 5 shows how dipole selection rules affect the entanglement transport from band Electrons to photons. Show less
