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Showing 1 to 6 of 6 for “"gaseous ions"”.
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Studies of the dissociation and energetics of gaseous ions
… ion coincidence mass spectra, enables fragment ions formed by dissociative single, double, and triple ionization, to be distinguished and quantified. Relative partial ionization cross sections (PICS) and precursor specific relative PICS are derived for the formation of positively charged …
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The Temperature Dependence of Reactions of Gaseous Ions: Kinetics and Thermodynamics of Transfer and Association Reactions
… on the kinetics and thermodynamics of gaseous ion-molecule reactions were investigated by pulsed, high pressure (0.4 - 3.0 torr) mass spectrometry in the temperature range 100 - 650°K. In the context of kinetic temperature effects, the reactions investigated may be divided into three …
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An AFM study of the surface of a polymer film bombarded by low energy gaseous ions
… on polymeric materials caused by accelerated ions. Gaseous ions are accelerated to different energies between 10 keV and 50 keV at fluences up to 10$\sp{15}$ ions/cm$\sp2$ by 200 keV Whickham ion accelerator at room temperature. The 2 x 2 cm$\sp2$ polyimide Kapton films, with measured …
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Development of a Laminar Construction Quadrupole Ion Trap
… trap (QIT) is an extraordinary device. It functions both as an ion store in which gaseous ions can be confined for a period of time and as a mass spectrometer of considerable mass range and variable mass resolution. Over the past few decades, it has evolved into a powerful tool for both research …
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Sampling, Detection, and Characterization of Endogenous Peptides
… in Chemistry. Using these techniques to create gaseous ions has led to the advent of proteomic and peptidomic studies driven primarily by mass spectrometry (MS) detection. Its utility comes from coupling the soft ionization with the mass accuracy and sensitivity in MS instrumentation, along with …
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Developing and Utilizing Gas-phase Laser Spectroscopy Techniques to Study the Effect of Desolvation on Molecules
… a valuable analytical technique that has applications in diverse fields. One requirement of employing mass spectrometry (MS) as a technique is that analysis occurs in the gas phase. Many samples, however, are found in solution and therefore desolvation is required for the analytes to be introduced …