Profile Picture

Gregory Horne

Radiation Chemistry Staff Scientist

Research Areas:


Gregory Horne, Ph.D., is a Radiation Chemistry Staff Scientist at Idaho National Laboratory and has over 7 years of experience in the area of applied and fundamental radiation chemistry, characterized by a combination of modeling methodologies and experiment techniques, specializing in spent nuclear fuel reprocessing radiation challenges and the radiation induced redox chemistry of the actinide series. His research has taken him from the UK (The University of Manchester and the National Nuclear Laboratory, Sellafield), to France (Université Paris-Sud Laboratoire de Chimie Physique, Orsay), and currently the USA (California State University Long Beach, the University of Notre Dame’s Radiation Research Laboratory, Brookhaven National Laboratory, and as a Russell L. Heath distinguished postdoctoral associate at Idaho National Laboratory).

Digital Profiles:

​Ph.D., Nuclear Fission Science and Technology (Radiation Chemistry Specialization) - School of Chemistry, The University of Manchester, Manchester, UK
M.Chem., Chemistry with Industrial Experience -  The University of Manchester, Manchester, UK


​American Chemical Society


​Horne, G. P.; Mezyk, S. P.; Moulton, N.; Peller, J. R.; Geist, A. Time-Resolved and Steady-State Irradiation of Hydrophilic Sulfonated Bis-triazinyl-(bi)pyridines – Modelling Radiolytic Degradation. Dalton Transactions, 2019, 48, 4547-4554.

Wang, F.; Horne G. P.; Pernot, P.; Archirel, P.; Mostafavi, M. Picosecond Pulse Radiolysis Study on the Radiation-Induced Reactions in Neat Tributyl Phosphate. Journal of Physical Chemistry B, 2018, 122 (28), 7134-7142.

Gregson, C. R.; Horne, G. P.; Orr, R. M.; Pimblott, S. M.; Sims, H. E.; Taylor, R. J.; Webb, K. J. Molecular Hydrogen Yields from the Alpha Radiolysis of Nitric Acid Solutions Containing Plutonium or Americium. Journal of Physical Chemistry B, 2018, 122 (9), 2627-2634.

Grimes, T. S.; Horne, G. P.; Dares, C. J.; Pimblott, S. M.; Mezyk, S. P.; Mincher, B. J. Kinetics of the Autoreduction of Hexavalent Americium in Aqueous Nitric Acid. Inorganic Chemistry, 2017, 56 (14), 8295-8301.

Horne, G. P.; Pimblott, S. M.; LaVerne, J. A. Inhibition of Molecular Hydrogen Formation by Quenching of Excited Water. Journal of Physical Chemistry B, 2017, 121 (21), 5385-5390.


​Horne, G. P. (Invited Speaker); Grimes, T. S.; Dares, C. J.; Bauer, W. F.; Pimblott, S. M.; Mezyk, S. P.; Mincher, B. J. “Multivalent (III, ‘IV’, V, and VI) Americium Radiolysis”. 2nd International Conference on Ionizing Processes, Annapolis, MD, USA, July 2018.

Horne, G. P. “Inhibition of Radiolytic Molecular Hydrogen Formation by Quenching Excited State Water from Gamma and Alpha Radiolysis of Nitric Acid Solutions” and “En Route to Complete Mineralization of Organic Species: Free Radical Induced Degradation of Small Carboxylic Acids”. GENIORS – 2nd Edition of the Radical Behaviour Workshop, Wuzburg, Germany, April 2018.

Horne, G. P. (Early Career Investigator) “Radiolytic Reduction of Americium(VI) in Nitric Acid”. 30th Miller Conference on Radiation Chemistry, Castellammare de Golfo, Sicily, October 2017.

Horne, G. P. (Early Career Investigator); Grimes, T. S.; Dares, C. J.; Mincher, B. J.; Mezyk, S P. “Radiolysis of Americium-Nitric Acid Solutions”. 253rd American Chemical Society National Meeting, San Francisco, CA, USA, March 2017.

Horne, G. P. “Re-evaluation of the Gamma Radiolysis Radiation Chemistry of Neptunium by Multiscale Modelling”. 41st Actinide Separations, Argonne National Laboratory, IL, USA, May 2017.


​3rd International Conference on Ionizing Processes chair and organizer.

Idaho National Laboratory Russell L. Heath Distinguished Postdoctoral Research Award, 2017.

University of Notre Dame Postdoctoral Fellowships in Energy Research Grant, 2017.

29th Miller Conference on Radiation Chemistry Baxendale Award, 2015.

Royal Society of Chemistry Grant, 2015.

Gordon Research Seminar Award, 2014

Research Interests:

​Dr. Gregory Horne’s  interests lie in challenges associated with radiation and radiochemistry in the nuclear fuel cycle, with particular emphasis on the effects of radiation on the components of spent nuclear fuel reprocessing systems. Dr. Horne focuses on understanding, through experiment and computation, the fundamental processes occurring in these systems in the presence of a radiation field, from ultra-fast to steady-state timescales.

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Created at 5/13/2019 7:44 AM by Phyllis L. King
Last modified at 5/13/2019 7:50 AM by Phyllis L. King