1. Harry Reid Center for Environmental Studies, University of Nevada, Las Vegas, Box 454009, 4505 Maryland Parkway, Las Vegas, Nevada 89154, United States
2. Nuclear Fuel Materials Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6093, United States
3. Department of Nuclear Engineering, University of California, Berkeley, 1140 Etcheverry Hall, M.C. 1730, Berkeley, California 94720-1730, United States