Two studies in gas-phase ion spectroscopy: vacuum-ultraviolet negative photoion spectroscopy and ion-molecule reaction kinetics

In this thesis Matthew Simpson reportstwo areas of work in gas ion spectroscopy, each investigation in itself worthy of a PhD. The first study uses tunablevacuum-ultraviolet radiation from a synchrotron to identify negative ions from twenty four photoexcited polyatomic molecules in the gas phase. From these experiments, Matthew collects a vast amount of data and summarises and reviews ion-pair formation from polyatomic molecules. The second study is on selectedion flow tube mass spectrometry. Matthew investigates the reactions of cations and anions with ethene, monofluoroethene, 1,1-difluoroethene and tetrafluoroethene. In this study Matthew tries to explain why certain products are formedpreferentially over other products at a microscopic level of understanding. The data recorded in this thesis form the most comprehensive collection of information about anion formation and are the basis of a review and numerous articles in specialist journals. Nominated by the University of Birmingham for a Springer Theses Prize. From a huge quantity of data the author attempts to rationalise the circumstancesneeded for favourable formation of anions. The most comprehensive collection of information on this type of ion formation INDICE: Introduction and background information. The experiments.- Vacuum-ultraviolet negative photoion spectroscopy of SF6, CF4 and SF5CF3. Vacuum-ultraviolet negative photoion spectroscopy of CF3Cl, CF3Br and CF3I. Vacuum-ultraviolet negative photoion spectroscopy of SF5Cl. Vacuum-ultraviolet negative photoion spectroscopy of small polyatomic molecules. The reactions of CFn+ (n = 1-3) with C2H4, C2H3F, CH2CF2 and C2HF3. The reactions of C2F4+ with C2H4, C2H3F, CH2CF2 and C2HF3. Reactions of OH-, O-, CF3-, F- and O2- with C2H4, C2H3F,CH2CF2, C2HF3 and C2F4 .

• ISBN: 978-3-642-23128-5
• Editorial: Springer Berlin Heidelberg
• Encuadernacion: Cartoné
• Páginas: 162
• Fecha Publicación: 31/10/2011
• Nº Volúmenes: 1
• Idioma: Inglés