Abstract

This survey of the lead region is an extension of our “Survey of Nuclear Structure Systematics for A ≥ 229” (72ElSc) published previously. The mass range covered is primarily A = 190 through A = 221. The emphases are on properties of low-lying states, their shell-model configurations, and their decay modes. A comprehensive systematics of α-decay hindrance factors is presented; for β − decay, only transitions between pure single-particle states are included in the log ft systematics. For IT decays the important case of M4 transitions is presented. Magnetic dipole moments are tabulated and the additivity relation is examined. The starting point of the present survey was the Evaluated Nuclear Structure Data File (ENSDF) (see the Cumulated Index to A-Chains on page iii of this issue for references to the individual mass chains). Most changes and updates of this file, made in the course of preparing the present survey, are mentioned in the text. We refer the reader to Nuclear Data Sheets for information on high-lying states, spectroscopic factors, documentation of the data, and other topics not treated in this survey.

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