The deuteron: structure and form factors

A brief review of the history of the discovery of the deuteron in provided. The current status of both experiment and theory for the elastic electron scattering is then presented.Comment: 80 pages, 33 figures, submited to Advances in Nuclear Physic

Multidimensional Conservation Laws: Overview, Problems, and Perspective

Some of recent important developments are overviewed, several longstanding open problems are discussed, and a perspective is presented for the mathematical theory of multidimensional conservation laws. Some basic features and phenomena of multidimensional hyperbolic conservation laws are revealed, and some samples of multidimensional systems/models and related important problems are presented and analyzed with emphasis on the prototypes that have been solved or may be expected to be solved rigorously at least for some cases. In particular, multidimensional steady supersonic problems and transonic problems, shock reflection-diffraction problems, and related effective nonlinear approaches are analyzed. A theory of divergence-measure vector fields and related analytical frameworks for the analysis of entropy solutions are discussed.Comment: 43 pages, 3 figure

Red Phase of the Red-backed Salamander from New Brunswick

Volume: 75Start Page: 53End Page: 5

Measurements of Diffraction of Shock Waves and Resulting Loading of Structures

Abstract Although the idea of using a shock tube to generate waves of large amplitude and to study their properties is not new, nevertheless this technique has been improved greatly in recent years. This circumstance, taken together with good optical methods of measurement, has provided a powerful tool for the investigation of a great variety of problems in transient interactions of shocks and fluid flows with solid objects and with each other. This paper is concerned with the evolution in time of a flow pattern about an obstacle initially in still air, passed over by a sudden front of high-speed flow induced by a shock wave, the stream approaching a steady configuration. Such information is not only of interest in the theory of fluid dynamics but it also is of considerable practical importance, since the principal forces on the obstacle can be measured as a function of time, and the character of the loading determined. The main objective of this paper is to elucidate the method by giving examples of a great variety of experiments and at the same time to provide a large amount of basic data which may be used by others in various types of analyses.</jats:p