[1] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA
[2] Columbia Univ, Dept Chem, New York, NY 10027 USA
[3] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[4] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA
[5] Clemson Univ, Dept Chem, Clemson, SC 29634 USA
[6] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA
[7] Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA
[8] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA
[9] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
[10] CALTECH, Pasadena, CA 91125 USA
[11] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA
[12] Tech Univ Munich, Inst Phys & Theoret Chem, D-85748 Garching, Germany
[13] USN, Res Lab, Washington, DC 20375 USA
[14] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
[15] Columbia Univ, Columbia Radiat Lab, Schapiro Ctr CEPSR 12, New York, NY 10027 USA
[16] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA