The Multiplexed Chemical Kinetic Photoionization Mass Spectrometer [electronic resource] : A New Approach To Isomer-resolved Chemical Kinetics
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 37 : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory
United States. Department of Energy. Office of Scientific and Technical Information
- We have developed a multiplexed time- and photon-energy?resolved photoionizationmass spectrometer for the study of the kinetics and isomeric product branching of gasphase, neutral chemical reactions. The instrument utilizes a side-sampled flow tubereactor, continuously tunable synchrotron radiation for photoionization, a multi-massdouble-focusing mass spectrometer with 100percent duty cycle, and a time- and positionsensitive detector for single ion counting. This approach enables multiplexed, universal detection of molecules with high sensitivity and selectivity. In addition to measurement of rate coefficients as a function of temperature and pressure, different structural isomers can be distinguished based on their photoionization efficiency curves, providing a more detailed probe of reaction mechanisms. The multiplexed 3-dimensional data structure (intensity as a function of molecular mass, reaction time, and photoionization energy) provides insights that might not be available in serial acquisition, as well as additional constraints on data interpretation.
- Published through SciTech Connect.
Review of Scientific Instruments ISSN 0034-6748; RSINAK FT
Hayden, Carl C.; Johnsen, Howard; Leone, Stephen R.; Ahmed, Musahid; Taatjes, Craig A.; Zou, Peng; North, Simon W.; Peterka, Darcy S.; Osborne, David L.; Knyazev, Vadim D.
Chemical Sciences Division
- Funding Information:
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