1. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
2. Department of Physics; University of Windsor; Windsor Ontario Canada
3. Geological and Environmental Sciences; California State University; Chico California USA
4. Magnetic Spectroscopy Group; Daresbury Laboratory; Warrington UK
5. School of Earth, Atmospheric, and Environmental Sciences; University of Manchester; Manchester UK
6. Advanced Light Source; Lawrence Berkeley National Laboratory; Berkeley California USA
7. Department of Physics; Boston University; Boston Massachusetts USA