Atomic Spectroscopy Databases
- A. Kramida, Yu. Ralchenko, J. Reader, and NIST ASD Team
- This database contains critically evaluated NIST data for radiative transitions and energy levels in atoms and atomic ions. Data are included for observed transitions of 99 elements and energy levels of 89 elements. ASD contains data on more than 1000 spectra from about 0.4 Å to 20000 µm, with more than 90,000 energy levels and 180,000 lines, 73,000 of which have transition probabilities.
In Version 5, a new Web interface for retrieval of ionization energies and total binding energies of ground states of all atomic spectra has been added. The Web interface for Lines and Levels has been improved. The search for multiple spectra can now be accomplished by specifying ranges of ionization sequences or ionization stages. The multiplet-averaged data can be retrieved for arbitrary atoms and ions. An advanced help system is provided with balloon explanations of various symbols and quantities.
New graphical features include dynamic transition plots (Grotrian diagrams) with ability to zoom into particular energy levels and their transitions, and online generated plots for Saha/Local Thermodynamic Equilibrium (LTE) plasma emission spectra for arbitrary electron temperature and density. The Grotrian diagrams interface requires a Java2 plugin (available at java.sun.com) for the user's browser. Also plots showing positions of spectral lines from different ions can be generated online.
- J.E. Sansonetti, W.C. Martin, and S.L. Young
- This handbook provides a selection of the most important and frequently used atomic spectroscopic data. The compilation includes data for the neutral and singly-ionized atoms of all elements hydrogen through einsteinium (Z = 1-99). The wavelengths, intensities, and spectrum assignments are given in a table for each element, and the data for the approximately 12,000 lines of all elements are also collected into a finding list, sorted by wavelength. The energy levels and transition probabilities (where available) are listed for a total of about 2,400 of the most persistent lines and we also give a separate table of energy level data for each spectrum. Details of the atomic weight, isotopic abundance, mass, nuclear spin, and magnetic moment of each element are also provided.
- U.D. Jentschura, S. Kotochigova, E.O. Le Bigot, P.J. Mohr, and B.N. Taylor
- This database provides theoretical values of energy levels of hydrogen and deuterium for principle quantum numbers n = 1 to 200 and all allowed orbital angular momenta l and total angular momenta j. The values are based on current knowledge of the relevant theoretical contributions including relativistic, quantum electrodynamic, recoil, and nuclear size effects. Contributions that are only known for low n states have been extrapolated to highly-excited states.
- H.-K. Chung, M.H. Chen, R.W. Lee, and Yu. Ralchenko
- Collisional-radiative code FLYCHK calculates atomic level populations, charge state distributions, and plasma emission spectra for low-Z to mid-Z elements under non-local thermodynamic equilibrium (NLTE) conditions.
- Yu. Ralchenko
- This database contains benchmark results for simulation of plasma population kinetics and emission spectra. The data were contributed by the participants of the 3rd Non-LTE Code Comparison Workshop. The available data include mean ion charges, ion populations, atomic process rates and other parameters over a wide range of temperatures and densities for a number of elements from C to Au.
- Yu. Ralchenko
- This database contains benchmark results for simulation of plasma population kinetics and emission spectra. The data were contributed by the participants of the 4th Non-LTE Code Comparison Workshop. The available data include mean ion charges, ion populations, atomic process rates and other parameters over a wide range of temperatures and densities for C, Ar, Fe, Sn, Xe, and Au.
- J.E. Sansonetti, J. Reader, C.J. Sansonetti, and N. Acquista
- An atlas of the spectrum of a platinum/neon hollow-cathode reference lamp in the region 1130 Å to 4330 Å is given, with the spectral lines marked and their intensities, wavelengths, and classifications listed. Graphical figures of the spectrum are included.
- Gillian Nave, Ariel Shlosberg, Stephan L. Redman, Craig J. Sansonetti
- This atlas presents observations of the spectra of Th-Ar hollow cathode lamps at currents ranging from 20 mA to 320 mA. The spectra were measured using Fourier transform spectrometers at the National Institute of Standards and Technology (NIST) and Kitt Peak National Observatory (KPNO) and cover wavelengths from 277 nm to 6288 nm. In addition to the plots of the spectra, a list of the spectral lines in each region are included that can be used as reference wavelengths for the calibration of high-resolution spectrographs.
- R.D. Deslattes, E.G. Kessler, Jr., P. Indelicato, L. de Billy, E. Lindroth, and J. Anton
- This X-ray transition table provides the energies and wavelengths for the K and L transitions connecting energy levels having principal quantum numbers n = 1, 2, 3, and 4. The elements covered include Z = 10, neon to Z = 100, fermium. There are two unique features of this database: (1) all experimental values are on a scale consistent with the International System of measurement (the SI) and the numerical values are determined using constants from the Recommended Values of the Fundamental Physical Constants: 1998 and (2) accurate theoretical estimates are included for all transitions.