About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Review of Scientific Instruments
Paper
Photoionization mass spectrometer with a microscope laser desorption source
Abstract
An apparatus is been described in which laser desorption, separate laser ionization, mass spectrometry, and microscopy are combined. An UV waveguide laser is focused on a sample, which is mounted on translation stages in vacuum. Desorbed neutral molecules are ionized above the surface by a second laser, and ions are extracted into a reflectron time of flight mass spectrometer. A spatial resolution of 1 μm is demonstrated, with a mass resolution of 2000 and a detection efficiency of 10-4.