Abstract

Miniature atom and ion sources have been developed which mount directly onto the mass spectrometer ion source, within the vacuum chamber. The new sources are inexpensive to construct and require no external mounting flange. The use of an ion versus atom beam has been found to be unimportant, although the particle mass and impact energy have important effects on the intensity of quasimolecular ions, apparently due to the deposited momentum. A model of ionization of samples suspended in a liquid matrix and bombarded by energetic particles is proposed, in which ionization occurs in the “gas phase” by a charge-cascade mechanism similar to chemical ionization.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.