期刊
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA
卷 45, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4940416
关键词
energy levels; hyperfine structure; lifetime; radium (Ra I); radium ion (Ra II); spectroscopic data; transitions; wavenumbers
Energy levels, wavelengths, lifetimes, and hyperfine structure constants for the isotopes of the first and second spectra of radium, Ra I and Ra II, have been compiled. Wavelengths and wavenumbers are tabulated for Ra-226 and for other Ra isotopes. Isotope shifts and hyperfine structure constants of even and odd-A isotopes of neutral radium atom and singly ionized radium are included. Experimental lifetimes of the states for both neutral and ionic Ra are also added, where available. The information is beneficial for present and future experiments aimed at different physics motivations using neutral Ra and singly ionized Ra. (C) 2016 AIP Publishing LLC for the National Institute of Standards and Technology.
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