Arlene Musgrove

Energy Levels of Sulfur, S I Through S XVI

Energy level data are given for the atom and all positive ions of sulfur (Z=16). These data have been critically compiled, mainly from published and unpublished material on measurements and analyses of the optical spectra. We have derived or recalculated the levels for a number of the ions. In addition to the level values in cm−1 and the parity, the J value and the configuration and term assignments are listed if known. Leading percentages from the calculated eigenvectors are tabulated or quoted wherever available. Ionization energies are given for all spectra.

Energy Levels of Copper, Cu I through Cu XXIX

The energy levels of the copper atom, in all stages of ionization for which experimental data are available, have been compiled. Ionization energies, either experimental or theoretical, and experimental g‐factors are given. Leading components of calculated eigenvectors are listed.

Energy levels of phosphorus, P I through P XV

Energy level data are given for the atom and all positive ions of phosphorus (Z=15). These data have been critically compiled, mainly from published and unpublished material on measurements and analyses of the optical spectra. We have derived or recalculated the levels for a number of the ions. In addition to the level values in cm−1 and the parity, the J value and the configuration and term assignments are listed if known. Leading percentages from the calculated eigenvectors are tabulated or quoted wherever available. Ionization energies are given for all spectra.

Energy Levels of Krypton, Kr I through Kr XXXVI

The energy levels of the krypton atom, in all stages of ionization for which experimental data are available, have been compiled. No data has yet been published for Kr XI through Kr XVIII. For H‐like krypton very accurate calculated level values are compiled. In all, data for 29 spectra are given. Experimental g‐factors are included for Kr I and Kr II. Calculated percentage compositions of levels are given for 12 ions. A value for the ionization energy of each ion, either experimental or theoretical, is included.

Energy Levels of Zinc, Zn I through Zn XXX

Atomic energy levels of zinc have been compiled for all stages of ionization for which experimental data are available. No data have yet been published for Zn IX, Zn X, Zn XXVI, and Zn XXVIII, and only several resonance lines of Zn XXIX and Zn XXX. Very accurate calculated values are compiled for Zn XXIX and Zn XXX. Experimental g‐factors and leading percentages from calculated eigenvectors are given. A value for the ionization energy, either experimental when available or theoretical, is included for the neutral atom and each ion. A review of the published literature is given.

Energy levels of molybdenum, Mo I through Mo XLII

The energy levels of the molybdenum atom, in all stages of ionization for which experimental data are available, have been compiled. Ionization energies, either experimental or theoretical, and experimental g‐factors are given. Leading components of calculated eigenvectors are listed.

Energy Levels of Germanium, Ge I through Ge XXXII

Atomic energy levels of germanium have been compiled for all stages of ionization for which experimental data are available. No data have yet been published for Ge VIII through Ge XIII and Ge XXXII. Very accurate calculated values are compiled for Ge XXXI and XXXII. Experimental g‐factors and leading percentages from calculated eigenvectors of levels are given. A value for the ionization energy, either experimental when available or theoretical, is included for the neutral atom and each ion. §

A compilation of energy levels and wavelengths for the spectrum of singly-ionized oxygen (O II)

We have assembled a complete list of the most accurately measured wavelengths for all classified lines of O II. The data are based mainly on recent extensions of the observations and analysis of this spectrum carried out at the University of Lund, Sweden. We derived new optimal values for the energy levels using a computer code and the observed wavelengths for all classified lines. Relevant astrophysical wavelength measurements, appropriately weighted were included in the level‐optimization calculation. The tabulated data include about 1000 observed lines (376–11 663 A) classified as transitions between 125 odd‐parity and 133 even‐parity levels. In addition to the observed wavelength values, wavelengths calculated from wavenumber differences of the levels are given for all observed lines and for more than 200 predicted lines that have not yet been observed. The calculated wavelengths are generally more accurate than the observed values, the most accurate calculated values (uncertainties 0.0005 to 0.0020 A) being in some cases more accurate than the observed wavelengths by up to an order of magnitude. Vacuum wavelengths are given for all lines, and wavelengths in air are also included for the region above 2000 A. §

Atomic Spectral Tables for the Chandra X-Ray Observatory. Part I S VIII–S XIV

Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized sulfur (S VIII–S XIV) in the region 21–170 A. These tables provide data of interest for the Emission Line Project in support of the analysis of astronomical data from the Chandra X-Ray Observatory. They will also be useful for the diagnostics of plasmas encountered in fusion energy research. The transition probabilities were obtained mainly from recent sophisticated calculations carried out with complex computer codes.

Spectroscopic data tables for highly ionized atoms

Two data centers at the National Institute of Standards and Technology (NIST) are engaged in the critical compilation of atomic spectroscopic data including those for highly ionized atoms-- the Atomic Energy Levels Data Center and the Data Center on Atomic Transition Probabilities. Several major compilations have been recently completed, centered on the iron-group elements.