Superheavy Elements

Superheavy Elements covers the proceedings of the International Symposium on Superheavy Elements, held in Lubbock, Texas on March 9-11, 1978. The book focuses on the compositions, reactions, transformations, and methodologies involved in the research on superheavy elements (SHE).
The selection first gives an overview of the history and perspectives of the search for SHE; attempts to produce SHE in reactions between heavy nuclei; and searches for SHE at the superhilac. The publication also examines the experimental prospects for the synthesis and detection of SHE, including alternate production modes for SHE and detection methods in the search for SHE.
The book looks at the experimental insights into the production of SHE using heavy ion reactions and observations of anomalous long-range alpha particles and their potential connection to superheavy matter. The publication also reviews the calculations for penetrability and the predictions of the spontaneous fission half-lives of SHE; feasibility studies of thermonuclear neutron capture synthesis of SHE; muonic transitions and X-ray spectra from SHE. Topics include transition energy and potential and quantum-electrodynamical corrections.
The text is a dependable source of data for readers interested in superheavy elements.

Contenu

Table of Contents
Preface
Program
Contents
Greetings
Session I: Opening of the Symposium
Opening Remarks
Welcoming Address
After-dinner speech: U.S. Science-A Current Perspective
Inaugural Lecture: Overview: History and Perspective of the Search for Superheavy Elements
Session II: Searches for She at Accelerators
Attempts to Produce SHE in Reactions Between Very Heavy Nuclei
Recent Searches for Superheavy Elements
Experimental Prospects for the Synthesis and Detection of Superheavy Elements
New Experimental Insights into the Production of Superheavy Elements Using Heavy Ion Reactions
Production of Actinides by Secondary Reactions in the Bombardment of a Tungsten Target with 24 GeV Protons
Study of Au, Tl and Pb Sources Separated from Tungsten Targets That Were Irradiated with 24 GeV Protons. Indications for the Possible Production of SHE
Neutron Multiplicity Measurements for Spontaneous Fission of Cf and Rn Isotopes and Relevance to Neutron Emission for SHE
Session III: Quest for She in Nature
Search for Superheavy Elements in Nature and in Heavy-Ion Reactions
Observation of Anomalous Long-Range Alpha Particles and Their Possible Connection to Superheavy Matter
Are Any Unusual Radio Halos Evidence for SHE
Existence of New Long-Range Alpha Particles in Nature
Analysis of a Giant Halo Monazite Inclusion on the Harwell Proton
Alpha Particle Study of Madagascar Monazite for Superheavy Elements
Lunar Palaeomagnetism and Evidence for Superheavy Elements in the Moon
Melting the Moon with Superheavy Elements
Super-giant Halos in Madagascar Biotite
Comments on the Recent Reports of SH Elements in Meteorites and Hot Springs
Experimental Constraints on the Existence of Superheavy Elements in Allende Acid Residues
A Critical Test of the Superheavy Fission Origin of Anomalous Anon in Allende
Future Experimental Tests for the Identification of SH Elements in Nature
Long Range Fission Fragments from Radiogenic Lead
Possible Mechanism for the Formation of Bleached, Giant Halos in Madagascan Mica
Session IV: Theoretical Predictions for SHE
Prediction of SHE Half-lives on the Basis of a Single Particle Potential
Present Status of the Half-Life Prediction for SHE
The Stability of Superheavy Elements: Rotation and Internal Excitation Limits
A Self-consistent Analytical Approach to Non-local Potential and Shell Structure of SHE
On the Magicity of the Neutron Number N=228
Comment on Extrapolated Single Particles Spectra for Superheavy Nuclei
Influence of Variable Nuclear Density Distribution on Fission Barriers between the Saddle and the Seission Points and Predictions for Superheavy Elements
Stability of SHE in the Light of Single Particle States of the Actinides
Shell Structure of 114 & 126+* with Skyrme-forces
Statistical Theory of Fission and Superheavy Elements
Session V: Atomic Phenomena Relevant to SHE
Electronic Spectra in Superheavy Elements
Model Experiments With Short-Lived Nuclides for the Investigation of the Quantitative Chemical Behaviour of New Elements
X-rays and Positrons from Heavy-Ion Collisions
A Possible X-Ray Spectroscopy of Superheavy Quasimolecules
Possible Muonic Transitions and X-Ray Spectra from SHE
Session VI: Models and Techniques Pertaining to SHE
Alpha-Decay of Heavy and Superheavy Nuclei
Exact Calculations for Penetrability and Prediction of the Spontaneous Fission Half-lives of SHE
Formation of Superheavy Nuclei by Heavy-Ion Fusion
Feasibility Studies of Thermonuclear Neutron Capture Synthesis of SHE
Synthesis of Superheavy Elements in the r-Process
The Helium Driven R-Process and Possible Superheavy Element Production
Superheavy Toroidal Nuclei
On a Chance of Superheavy Nuclei with a Bubble Geometry
Possible Oosmic Ray Superheavy Event
Crystalline Structure of Heavy and Superheavy Elements
A More Exact Uncertainty Principal
Session VII: Final Plenary Session
Summary of the Symposium
List of Registrants
Author Index
Subject Index