1. Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
2. Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA
3. Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS, CEA, Université Paris-Saclay, F 91128 Palaiseau, France
4. Department of Mechanic Engineering and Materials Science & Engineering Program, University of California, Riverside, California 92521, USA