Photoionization mass spectrometer for studies of flame chemistry with a synchrotron light source
Creators
- 1. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- 2. Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
- 3. Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551 (United States)
- 4. School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 (United States)
Description
A flame-sampling molecular-beam photoionization mass spectrometer, recently designed and constructed for use with a synchrotron-radiation light source, provides significant improvements over previous molecular-beam mass spectrometers that have employed either electron-impact ionization or vacuum ultraviolet laser photoionization. These include superior signal-to-noise ratio, soft ionization, and photon energies easily and precisely tunable [E/ΔE(FWHM)≅250-400] over the 7.8-17-eV range required for quantitative measurements of the concentrations and isomeric compositions of flame species. Mass resolution of the time-of-flight mass spectrometer is m/Δm=400 and sensitivity reaches ppm levels. The design of the instrument and its advantages for studies of flame chemistry are discussed
Additional details
Identifiers
- DOI
- 10.1063/1.2010307;
Publishing Information
- Journal Title
- Review of Scientific Instruments
- Journal Volume
- 76
- Journal Issue
- 9
- Journal Page Range
- p. 094102-094102.7
- ISSN
- 0034-6748
- CODEN
- RSINAK
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37035638
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- DESIGN; ELECTRONS; EV RANGE; FLAMES; LASERS; LIGHT SOURCES; MASS RESOLUTION; MOLECULAR BEAMS; PHOTOIONIZATION; PHOTONS; SENSITIVITY; SIGNAL-TO-NOISE RATIO; SYNCHROTRON RADIATION; SYNCHROTRONS; TIME-OF-FLIGHT MASS SPECTROMETERS; ULTRAVIOLET RADIATION
- Descriptors DEC
- ACCELERATORS; BEAMS; BOSONS; BREMSSTRAHLUNG; CYCLIC ACCELERATORS; DIMENSIONLESS NUMBERS; DYNAMIC MASS SPECTROMETERS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; IONIZATION; LEPTONS; MASS SPECTROMETERS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; RADIATION SOURCES; RADIATIONS; RESOLUTION; SPECTROMETERS; TIME-OF-FLIGHT SPECTROMETERS
Optional Information
- Notes
- (c) 2005 American Institute of Physics