![]() ![]() An advanced help system is provided with balloon explanations of various symbols and quantities. The multiplet-averaged data can be retrieved for arbitrary atoms and ions. The search for multiple spectra can now be accomplished by specifying ranges of ionization sequences or ionization stages. The Web interface for Lines and Levels has been improved. 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. 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. Data are included for observed transitions of 99 elements and energy levels of 89 elements. 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. Bibliographic Database on Atomic Energy Levels and SpectraĪtomic Spectra Database - Version 5 A.Bibliographic Database on Atomic Spectral Line Broadening and Shifts.Bibliographic Database on Atomic Transition Probabilities.Spectrum of Platinum Lamp for Ultraviolet Spectrograph Calibration.NLTE4 Plasma Population Kinetics Database.SAHA Plasma Population Kinetics Database.NIST-LANL Lanthanide/Actinide Opacity Database.Energy Levels of Hydrogen and Deuterium.Laser Induced Breakdown Spectroscopy (LIBS).Handbook of Basic Atomic Spectroscopic Data.Synchrotron Ultraviolet Radiation Facility SURF III.Radiopharmaceutical Standardization Laboratory. ![]() Calibrations Customer Survey (external link). ![]()
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