Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 79, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3000004
Keywords
mass spectrometers; multiplexing; photoionisation; reaction kinetics; synchrotron radiation
Categories
Funding
- Division of Chemical Sciences, Geosciences, and Biosciences
- Office of Basic Energy Sciences
- U. S. Department of Energy
- Sandia Corporation, a Lockheed Martin Co. [DE-AC04-94-AL85000]
- Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy [DE-AC02-05CH11231]
Ask authors/readers for more resources
We have developed a multiplexed time- and photon-energy-resolved photoionization mass spectrometer for the study of the kinetics and isomeric product branching of gas phase, neutral chemical reactions. The instrument utilizes a side-sampled flow tube reactor, continuously tunable synchrotron radiation for photoionization, a multimass double-focusing mass spectrometer with 100% duty cycle, and a time- and position-sensitive 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 three-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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available