Editor-in-Chief Ting C. Huang 6584 Radko Drive San José, California 95119-1924 tinghuang@tinghuang.com Managing Editor Nicole Ernst Boris International Centre for Diffraction Data 12 Campus Boulevard Newtown Square, Pennsylvania 19073-3273 boris@icdd.com Editor for New Diffraction Data W. Frank McClune International Centre for Diffraction Data 12 Campus Boulevard Newtown Square, Pennsylvania 19073-3273 mcclune@icdd.com Editors Xiaolong Chen Institute of Physics Chinese Academy of Sciences PO Box 603 Beijing 100080 China xlchen@aphy.iphy.ac.cn José Miguel Delgado Departamento de Química Universidad de Los Andes Mérida 5101 Venezuela migueld@ula.ve Ian Madsen CSIRO Minerals PO Box 312 Clayton South, Victoria 3169 Australia ian.madsen@csiro.au Norberto Masciocchi Dipartimento di Scienze Chimiche e Ambientali Università dell'Insubria via Valleggio 11 Como 22100 Italy norberto.masciocchi@uninsubria.it Editors for Crystallography Education James Kaduk Analytical Science Research Services Poly Crystallography Inc. 423 East Chicago Avenue Naperville, Illinois 60540-5407 Kaduk@polycrystallography.com Brian H. Toby Advanced Photon Source Argonne National Laboratory 9700 South Cass Avenue, Building 433 Argonne, Illinois 60439-4856 brian.toby@anl.gov International Reports Editor Winnie Wong-Ng National Institute of Standards and Technology 100 Bureau Drive, Mail Stop 8520 Gaithersburg, Maryland 20899-8520 winnie.wong-ng@nist.gov On the cover: Three-dimensional electron-density distributions determined by MPF with the split-atom model. Isosurfaces expressed in wireframe style for an equidensity level of 0.005 nm-3 (courtesy of Koichiro Fukuda).

Powder Diffraction is a quarterly journal published by the JCPDS-International Centre for Diffraction Data through the American Institute of Physics (AIP). Powder Diffraction is a journal of practical technique, publishing articles relating to the widest range of application - from materials analysis to epitactic growth of thin films and to the latest advances in software. Although practice will be emphasized, theory will not be neglected, especially as its discussion will relate to better understanding of technique. Submit manuscripts to the most appropriate Powder Diffraction Editor listed on this page. Send each manuscript as one Microsoft Word file by e-mail attachment. The Editors will consider all manuscripts received, but assume no responsibility regarding them. Materials will be returned only when accompanied by appropriate postage. There is no publication charge. See Powder Diffraction Notes for Authors for additional information. 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