Search for dissertations about: "time-of-flight spectrometer"
Showing result 21 - 25 of 42 swedish dissertations containing the words time-of-flight spectrometer.
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21. Antiparticle identification studies for the PAMELA satellite experiment
Abstract : The PAMELA satellite experiment will soon be launched and during its 3 year mission perform measurement of charged particle fluxes in the cosmic radiation. PAMELA is specifically designed to identify antiprotons and positrons in the vast background of other charged particles. READ MORE
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22. Chiral Recognition by Means of Mass Spectrometry
Abstract : This thesis is based on experimental studies of chiral ions in gas-phase. Electrospray ion source platform (Stockholm University) and commercially available Quadrupole Time-of-Flight mass spectrometer have been used in our studies. READ MORE
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23. Formation and fragmentation dynamics of superexcited molecules
Abstract : A series of experimental studies on superexcited smallmolecules have been performed giving new information on theformation and fragmentation dynamics of small superexcitedmolecules. Highly monochromatized synchrotron radiation hasbeen applied in the 5-30 eV energy region, corresponding tovalence shell excitation, and in the 60-600 eV region,corresponding to core shell excitation, to reach these neutralstates above the ionization potential. READ MORE
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24. Method and technique development in peptide and protein mass Spectrometry
Abstract : Mechanistic studies and applicability of several methods and techniques for studying peptides and proteins with mass spectrometry are presented. A model for the protein molecular ion formation in explosive matrix-assisted plasma desorption mass spectrometry is proposed, involving a contribution from the chemical energy release during conversion of the explosive, an enhanced protonation through collisions with products from the explosive decay, and electron scavenging by other products. READ MORE
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25. A New Measurement of Low Energy Antiprotons In the Cosmic Radiation
Abstract : New measurements of the antiproton flux and the antiproton-to-proton flux ratio at the top of the atmosphere between 80 MeV and 2.0 GeV are presented. The measurement was conducted from July 2006 to March 2008 with the PAMELA satellite experiment. READ MORE