Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan


John Barker
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John R Barker

Professor Emeritus

Office: 1520 Space Research Building
Phone: (734) 763-6239
Fax: (734) 936-0503
[ Link to website ]


Ph.D., M.S., Chemistry, Carnegie-Mellon University B.S., Hampden-Sydney College


Computational chemical kinetics and dynamics

Specializations and Research Interests

  • Atmospheric Chemistry
  • Master equation modeling (MultiWell Program Suite computer codes)
  • Chemical-dynamical modeling of elementary reactions
  • Fundamental studies of molecular energy transfer

Honors, Awards and Accomplishments

  • Visiting Scholar as a guest of the Institute of Theoretical Chemistry, State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun, China (July 1-31, 2008)
  • AOSS Outstanding Achievement Award (2006) 
  • AOSS Department Excellence in Teaching Award (1993, 1997)
  • Co-organizer of the Workshop on Large Molecule Energy Transfer (Adelaide, Australia 1996)
  • Host of the 19th Informal Conference on Photochemistry (Ann Arbor, 1990)
  • H. Julian Allen Award (1986): An originator (with Louis J. Allamandola and A. G. G. M. Tielens) of the "PAH Hypothesis" — that polycyclic aromatic hydrocarbon species are abundant in the interstellar medium and in the outflows from carbon-rich stars

Professional Service

  • co-Editor, Advances in Atmospheric Chemistry (World Scientific; Volume 1 to appear in 2016)
  • Member, NASA/JPL Panel for Data Evaluation (Atmospheric Chemistry and Photochemistry)
  • American Physical Society
  • American Chemical Society
  • American Geophysical Union


  1. Ralph E. Weston, Jr., Thanh Lam Nguyen, John F. Stanton, and John R. Barker, "HO + CO Reaction Rates and H/D Kinetic Isotope Effects: Master Equation Models with ab Initio SCTST Rate Constants", J. Phys. Chem. A 117, 821−835 (2013).
  2. J. R. Barker, J. R., T. L. Nguyen, and J. F. Stanton, "Ab Initio Kinetic Isotope Effects for Cl + CH4 Computed Using Semi-Classical Transition State Theory", J. Phys. Chem. A, 116, 6408−6419 (2012).
  3. Nguyen, T.L., J.F. Stanton, and J.R. Barker (2010), A Practical Implementation of Semi-Classical Transition State Theory for Polyatomics, Chem. Phys. Letters, 499, 9-15.
  4. David M. Golden and John R. Barker, "Pressure- and Temperature-Dependent Combustion Reactions", Combust. Flame, 158, 602–617 (2011)
  5. Nguyen, T.L., and J.R. Barker (2010), Sums and Densities of Fully-Coupled Anharmonic Vibrational States: A Comparison of Three Practical Methods, J. Phys. Chem. A., 114, 3718–3730.
  6. Barker, J.R., and R.E. Weston (2010), Jr., Collisional Energy Transfer Probability Densities P(E,J;E',J') for Monatomics Colliding with Large Molecules, J. Phys. Chem. A, 114, 10619–10633.
  7. Maranzana, A., J. R. Barker, and G. Tonachini (2007), Master Equation Simulations of Competing Unimolecular and Bimolecular Reactions: Application to OH Production in the Reaction of Acetyl Radical with O2, Phys. Chem. Chem. Phys., 9, 4129 - 4141.
  8. Barker, J. R., L. L. Lohr, R. M. Shroll, and S. Reading (2003), Modeling the Organic Nitrate Yields in the Reaction of Alkyl Peroxy Radicals with Nitric Oxide. II. Reaction Simulations, J. Phys. Chem. A., 107, 7434-7444.
  9. Barker, J. R., L. M. Yoder, and K. D. King (2001), Feature Article: Vibrational Energy Transfer Modeling of Non-Equilibrium Polyatomic Reaction Systems, J. Phys. Chem. A, 105, 796-809.
  10. Barker, J. R. (2001), Multiple-well, multiple-reaction-path unimolecular reaction systems. I. MultiWell computer program suite, Int. J. Chem. Kinetics, 33, 232-245.


Updated: 2016-03-23