Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638178
Title: Ion trajectory calculations and their application to kinetic studies in mass spectrometry
Author: Mendez Amaya, A.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1980
Availability of Full Text:
Access from EThOS:
Abstract:
In this work a numerical method for the calculation of metastable peak shapes due to reactions occurring in either field-free region preceding the electric sector of double focusing mass spectrometers is presented. The work is based on the distribution of daughter ions according to their final kinetic energy after fragmenting with a release of internal energy isotropically in the centre of mass of the parent ion. The method is extended to consider the kinetic energy release distribution function f(T) by direct analysis of metastable peak shapes. A procedure for the correction of the main beam of reacting ions using Fast Fourier Transforms is also presented. The thesis has been divided into seven chapters and the Appendix. The first chapter is concerned with a general introduction and the explanation of the scope of the thesis. The second chapter presents a survey of previous methods. The third, fourth and fifth chapters contain the detailed description of the method in the following manner: Distribution of velocity and energy of daughter ions for cases without instrumental discrimination and calculation of "Gaussian" type metastable peaks appears in the third chapter. Distribution of velocity and energy for reactions in which there is instrumental discrimination and calculation of dish-topped metastable peaks appears in Chapter Four. Determination of the kinetic energy release distribution function f(T) by direct analysis of the experimental peak is discussed in the fifth chapter. Chapter Six contains the procedure for the correction of the metastable peak for the main beam of reacting ions. Chapter Seven is concerned with the concluding remarks and final comments and, finally, in the Appendix a description of a similar analytical method used in some calculations is given as well as the computer programs used throughout the thesis.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.638178  DOI: Not available
Share: