1. Biological & Agricultural Engineering Department, Louisiana State University and LSU Ag Center, 149 E. B. Doran Bldg., Baton Rouge, Louisiana 70803, United States
2. Department of Chemistry, Louisiana State University, Baton Rouge, 331 Chemistry and Materials Bldg, Louisiana 70803, United States
3. A235 NIST Center for Neutron Research National Institute of Standards and Technology, Gaithersburg, Maryland 20988-8562, United States