Development of an Electrospray Photoelectron Spectroscopy Apparatus with a Low Temperature Ion Trap (Kay's BES-Surface Kinetics, PNNL Scope #16248)
EMSL Project ID
3170a
Abstract
We propose to develop an electrospray photodetachment apparatus with a low temperature ion trap. We have pioneered photoelectron spectroscopic studies of multiply charged anions and solution species in the gas phase using electrospray ionization (ESI). A critical feature of this apparatus is its ability to trap ions and accumulate number density from the CW ESI source for subsequent TOF mass analyses. A low temperature trap will be critical to suppress thermal broadening in the PES spectra and help stabilize weakly bound clusters. Other novel features of the proposed apparatus include pre-mass selection before the ion trapping and a high resolution reflectron TOM mass spectrometer. The new apparatus will be the first prototype of a low-temperature ion trap, which will have major impact in the filed of ion spectroscopy and physical chemistry.
Project Details
Project type
Exploratory Research
Start Date
2006-01-05
End Date
2007-03-19
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Wang XB, and LS Wang. 2008. "Development of a Low-Temperature Photoelectron Spectroscopy Instrument Using an Electrospray Ion Source and a Cryogenically Controlled Ion Trap." Review of Scientific Instruments 79(7):Art. No. 073108. doi:10.1063/1.2957610
Wang XB, Y Wang, H Woo, J Li, G Wu, and LS Wang. 2006. "Free Tetra-and hexa-coordinated Platinum-Cyanide Dianions, PT(CN)4 2- and PT(CN)6 2-: A Combined Photodetachment Photoelectron Spectroscopic and Theoretical Study." Chemical Physics 329(1-3):230-238.
Yang J, XB Wang, X Xing, and LS Wang. 2008. "Photoelectron Spectroscopy of Anions at 118.2 nm: Observation of High Electron Binding Energies in Superhalogens MCI4- (M=Sc, Y, La)." Journal of Chemical Physics 128(20):Art. No. 201102. doi:10.1063/1.2938390