Discusses the possibility of creating elements with an atomic number of around 114. Describes the underlying physics responsible for the limited extent of the periodic table and enumerates problems that must be overcome in creating a superheavy nucleus. (GS)

Outlines the changes in concepts of atomic structure, and describes the search for quarks. (AL)

Describes the serendipitous discovery of paths left by charged particles in the magnetic deflection unit outside of a cyclotron. Offers suggestions for their occurrence. (CP)

Discusses the origins of electronegativity as a qualitative concept in the period between 1809 and 1813. Outlines the contributions of Amedeo Avogadro and Jons Jakob Berzelius to the development of this concept. Contains 53 references. (JRH)

The recollections of a nuclear pioneer provide a perspective of historical developments in atomic energy. (PEB)

Explains current knowledge about the makeup of matter at the microscopic (and even more infinitesimal) levels, accentuating the role of accelerators in the process and considering whether more fundamental particles may exist. Classification of subatomic particles, hadrons, quarks, and gluons are among the areas examined. (JN)

Discusses subatomic particles (quarks, leptons, and others) revealed by higher accelerator energies. A connection between forces at this subatomic level has been established, and prospects are good for a description of forces that encompass binding atomic nuclei. Colors, fundamental interactions, screening, camouflage, electroweak symmetry, and…

The newest and most exotic manner in which stars die is investigated. A brief outline is presented, along with a discussion of the role supernova play, followed by a description of how the black holes originate, exist, and how they might be detected. (DF)

Describes an undergraduate laboratory experiment on the statistical theory of nuclear reactions. The experiment involves measuring the relative cross sections for formation of a nucleus in its meta stable excited state and its ground state by applying gamma-ray spectroscopy to an irradiated sample. Involves 3-4 hours of laboratory time plus…

The appearance, cost, purposes, and principles involved in particle accelerators are presented. Included is a discussion of why particle accelerators are relevant and necessary. (DS)