摘要:

All of the rotational spectral lines observed and reported in the open literature for 83 diatomic molecules have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty, and reference are given for each transition reported. In addition to rectifying a number of misprints and errors in the literature cited, the spectral lines for approximately 20 molecules have been reanalyzed to produce a comprehensive and consistent analysis of all the data extracted from various literature sources. The derived molecular properties, such as rotational constants, hyperfine structure constants, electric dipole moments, rotationalg‐factors and internuclear distances are listed with one standard deviation uncertainties for all species.

ISSN:0047-2689    

DOI:10.1063/1.3253146

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

Values of the first four ionization potentials of the lanthanides (Z=57–71) and of Hf have been compiled. All except the value for neutral Hf are based on spectroscopic data. The spectroscopic designations of the ground levels of the neutral through triply ionized atoms (Z=57–72) are also tabulated. A similar compilation for the actinides (Z=89–103) lists Sugar's recent values for the first ionization potentials through No (Z=102). Accurate spectroscopic ionization potentials have been determined for only two of the actinide ions (Ac+and Th3+). The ground‐level designations for the neutral through triply ionized actinides are given where they are known or can be predicted with near certainty. A selection of references to the most complete and most recent work on the analyses of the optical spectra of the neutral through triply ionized lanthanide and actinide elements is included.

ISSN:0047-2689    

DOI:10.1063/1.3253147

出版商:AIP    

年代:1974

数据来源: AIP

摘要:

Data on polymorphic phase changes and variation of melting temperature of the elements with pressure have been compiled and critically evaluated. Emphasis has been placed on work done at pressures exceeding 1 kbar. Pressure‐temperature phase diagrams showing first‐order solid‐solid phase boundaries and/or melting curves derived from the best available data are given for 58 elements. Information on the crystal structures of high‐pressure polymorphs is also reviewed. Those elements that exist in the gaseous state at room temperature and pressure are not included.

ISSN:0047-2689    

DOI:10.1063/1.3253148

出版商:AIP    

年代:1974

数据来源: AIP