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. Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
4. Mechanical Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, USA
5. Chemical and Biological Engineering Department, University of New Mexico, Albuquerque, New Mexico 87131, USA
6. School of Nuclear Science and Engineering, Oregon State University, Corvallis, Oregon 97330, USA