K. S. Shanksa, H. T. Philippa, B.W. Martinb, V.E. Fleischauerb, M. W. Tatea, S. M. Grunera,c
a Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY; bSydor Technologies, Fairport, NY; cCornell High Energy Synchrotron Source, Ithaca, NY
