1. Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, New Mexico 87131, USA
2. Nuclear Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, USA
3. Mechanical Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, USA
4. Chemical and Biological Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, USA
5. Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
6. School of Nuclear Science and Engineering, Oregon State University, Corvallis, Oregon 97331, USA