The use of ion accelerators for purposes other than nuclear l physics research has expanded to the point where lother uses are now the most typical. The point has been reached where there are as many ion accelerators in industry, as in universities; and the bulk of new accelerator purchases appears to be for applied pur poses. We mention this as introduction to a tribute to an earlier book: IINew Uses of Low Energy Accelerators" (1968). The authors of tnis book were almost all nuclear physicists. This book ad dressed itself to new uses other than nuclear research. And in great part because of the widespread seminal influence of this book, many of the new uses discussed became mature fields of re search with their own conferences and publications. We have attempted in this book to both update with topics not included in the first book, and to present in a more tutorial and detailed manner the topics discussed. This book is in many ways a joint book. All chapters were the result of considerable collaboration between the authors. We hope that, above all, we have written with clarity. We welcome comments and questions from any reader. James F. Ziegler IBM-Research v CONTENTS CHAPTER 1. Ion-Excited X-Ray Analysis of Environmental Samples Thomas A. Cahill I. Introduction ....... ......"

The concept of a "postracial" America -the dream of a nation beyond race - has attracted much attention over the course of the presidency of Barack Obama, suggesting that this idea is peculiar to the contemporary moment alone. Postracial America? An Interdisciplinary Study attempts to broaden the application of this idea by situating it in contexts that demonstrate how the idea of the postracial has been with America since its founding and will continue to be long after the Obama administration's term ends. The chapters in this volume explore the idea of the postracial in the United States through a variety of critical lenses, including film studies; literature; aesthetics and conceptual thinking; politics; media representations; race in relation to gender, identity, and sexuality; and personal experiences. Through this diverse interdisciplinary exploration, this collection skeptically weighs the implications of holding up a postracial culture as an admirable goal for the United States.