Surface formation routes of interstellar molecules : a laboratory study

Leiden Repository

Surface formation routes of interstellar molecules : a laboratory study

Type: Doctoral Thesis
Title: Surface formation routes of interstellar molecules : a laboratory study
Author: Sergio, Ioppolo
Publisher: Raymond & Beverly Sackler Laboratory for Astrophysics, Leiden Observatory, Faculty of Science, Leiden University
Issue Date: 2010-12-09
Keywords: Astrochemistry
Infrared: ISM
ISM: abundances
ISM: atoms
ISM: molecules
Methods: laboratory
Molecular processes
Techniques: spectroscopic
Abstract: It has been a long standing problem in astrochemistry to explain how molecules can form in a highly dilute environment as the interstellar medium. In recent years it has become clear that solid state reactions on icy grains play an important role in the formation of both simple and rather complex molecules. Laboratory based experiments that simulate the UV processing or the impact of H-atoms on interstellar ice analogues are needed in order to investigate the underlying processes. This is the topic of this PhD thesis that mainly summarizes research on SURFRESIDE, one of the ultra-high vacuum setup in the Sackler Laboratory for Astrophysics. It is shown how under fully controlled conditions molecules form when CO and O2 containing ices are bombarded by hydrogen atoms. Surface reaction schemes for methanol, water, carbon dioxide and formic acid formation at low temperatures in space are presented, and it is discussed how species may be chemically linked in space.
Description: Promotores: H.V.J. Linnartz, E.F. van Dishoeck, Co-promotor: H.M. Cuppen
With summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Ioppolo, S., 2010, Doctoral thesis, Leiden University
ISBN: 9789090258546
Sponsor: NOVA and Spinoza grant from NWO.
Handle: http://hdl.handle.net/1887/16228
 

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