My primary research interest is neutron/gamma dosimetry in mixed field (primarily research reactor) environments.  In general, a mixed field environment is a radiation environment characterized by radiation of different types.  For example, the primary radiation field in a research reactor consists of neutrons and gammas.  Although the neutron component of a mixed neutron/gamma field can often be measured with great precision and accuracy due to the nature of the detectors used (activation foils that respond only to neutrons), the measurement of the gamma component must be adjusted for the contributions to the gamma dosimeter made by the neutrons.  This process is straightforward for integral environments, but it becomes extremely complex for measurements of the time-dependent radiation field.

Other research interests over the years have included ring laser interferometers, electron emissions from low energy protons and alpha particles, radiation bystander effects in mammalian cell lines, research reactor modeling, nuclear reactor kinetics, radiation damage of electronic devices, quantifying the uncertainties for large scale multi-physics codes, and advanced reactor concepts.

Recent Publications
J. G. Williams, P. J. Griffin, D. B. King, D. W. Vehar, T. Schnauber, S. M. Luker, and K. R. DePriest.  “Simultaneous Evaluation of Neutron Spectra and 1-MeV-Equivalent (Si) Fluences at SPR-III and ACRR.”  IEEE Trans. on Nucl. Sci., Vol. 54, No. 6, pp. 2296-2302, December 2007.

S. M. Luker, P. J. Griffin, K. R. DePriest, D. B. King, G. E. Naranjo, and A. J. Suo-Anttilla.  “Application of a Silicon Calorimeter in Fast Burst Reactor Environments.”  Journal of ASTM International, Vol. 4, No. 5, May 2007.

K. R. DePriest. “Bootstrap Techniques Versus Full Core Model for Control Rod Calibration.” American Nuclear Society Transactions , Vol. 95, pp. 409-410, November 2006.

S. M. Luker, P. J. Griffin, K. R. DePriest, D. B. King, G. E. Naranjo, A. J. Suo-Anttilla, and N. Keltner.  “Development of a Silicon Calorimeter for Dosimetry Applications in a Water-Moderated Reactor.”  Journal of ASTM International, Vol. 3, No. 10, November/December 2006.

K. R. DePriest.  “Benchmark Experiments/Calculations of Neutron Environments in the Annular Core Research Reactor.”  Journal of ASTM International, Vol. 3, No. 8, September 2006.

P. J. Griffin, S. M. Luker, D. B. King, K. R. DePriest, and P. J. Cooper. “Characterizing the Time- and Energy-Dependent Reactor n/g Environment.”  Journal of ASTM International, Vol. 3, No. 8, September 2006.

K. R. DePriest.  “Experiment Summary for n/g Attenuation Through Materials (Environments 1A).” SAND Report No. SAND2006-3066, Sandia National Laboratories, Albuquerque, NM, May 2006.

K. R. DePriest, P. J. Cooper, and E. J. Parma. “MCNP/MCNPX Model of the Annular Core Research Reactor.” SAND Report No. SAND2006-3067, Sandia National Laboratories, Albuquerque, NM, May 2006.

K. R. DePriest.  “Summary of NuGET Validation Activities for n/g Attenuation Through Materials (Environments 1A).” SAND Report No. SAND2006-3068, Sandia National Laboratories, Albuquerque, NM, May 2006.